Alice is not the sanest girlin the world, and everybody knows it. Bob is trying to provide her with love and support, and sometimes she lashes out - he's willing to take it, in the hopes that he canheal her.
"She can either smack me now, or let it fester. A bruised cheek is preferable to whatever she'll cook up if she thinks about it."
Bob is an Amazon Chaser. To quote the page, "I love the kind of woman who could kick my ass."
Bob can't or can only feel pain. A slap is a genuine display of affection on Alice's part.
Bob slaps Alice around, and nobody minds (or they find it amusing). Of course, this makes for different Unfortunate Implications...
Alice slaps Bob once, and it's treated as a capital crime.
Alice slaps Bob around as usual, but is then scolded by her friend Christine. "How dare you slap Bob around like that?"
Alice hits Bob, but he eventually hits her back for revenge.
Bob eventually stands up for himself and succeeds to talk Alice into behaving herself and find other ways to let out her anger than slapping him every time she needs to explode, and this confrontation shames her friends into realizing their marginalization of the situation.
Alice slaps Bob without repercussion and no one seems to mind. Then she slaps his son, and Bob makes it abundantly clear that while he will take it because of societal pressures, if she does that to his son again he'll dangle her out a window. By her feet.
"We have a system. The more she hits me, the more starch I get to put into her underwear on laundry day."
Alice hits Bob, and gets in trouble.
Alice hits Bob, and he legsweeps her in self-defense.
""How dare you slap Bob around like that, without me?"
Alice's abusive behavior towards Bob is taken seriously, and his friends help him get out of a bad relationship. Alice then leaves the series/their social circle; however, in her last appearance, it's revealed that she's gotten together with Derek, a misogynistic pig. When they learn about this, her ex-friends laugh and say the pair deserve each other.
Alice hits Bob for petty things and gets away with it. However, when she really hurts him or it hits a breaking point, she's told to stop.
Alice beats up the much physically weaker Bob, and a bystander calls the police. However, the police laugh it off and let Alice off with a warning, since they don't believe a female can abuse a male. However, later that night, the cops show up at Alice's door to arrest her for abuse...of anabolic steroids.
Averted: Alice's abuse of Bob is portrayed as just as bad as Bob hitting her would be.
Enforced: "People love Slap Stick humor! Let's have Alice beat Bob regularly."
Lampshaded: "You're a guy; you could never get away with this." * whack*
Alice is fully aware of the Double Standard and plays it to her advantage, having chosen Bob because he's too meek to stand up for himself and would get flack from his "friends" if they knew he was being bullied by his girlfriend.
Bob: (wearing a foam rubber boxing helmet, and holding a box of Oreos.) "Okay, Alice. I'm going to ask you to do something lewd, and, rather than doing what I ask, you are going to hit me and call me gross for it. [Insert favorite sexual activity here.]" Alice: "N-No! (weak tap) Y-you're a p-p-pig." Bob: "Good girl. Have a cookie. With feeling, this time..."
Always will be by the mean characters who happen to be woman and be abusive.
Bob allows himself to be body-swapped by Alice. Now he can take his revenge and gets away with it.
Bob does a genderbend to take it out on Colin.
"Did you really think we'd just laugh off the way you're treating him, you bitch?"
After beating Bob in a rage, Alice feels miserable and realizes that she will become a complete bitch, no better than wife-beater husbands, so she stops her behavior and decides to not beat Bob anymore.
Alice hits Bob once, and he dumped her, right on the spot.
Bob: "You might not have hurt me seriously, but knowing that you'd even try... that hurts far worse than hitting me with your purse did. I never want to see you again. You are dead to me." Alice: (thickly) "You can't... you don't mean that..." Bob: "Get Out."
PSAs were set up alerting people not to take females abusing males lightly.
"Why are you looking at me like that? In the movies, nobody ever takes notice of this kind of thing."
Alice hits Bob. Their son Charlie asks, "How come it's okay for you to hit dad like that?"
"You know Alice, if I were hitting you, I'd be going to jail right about now."
Conversed: "How come women in movies can abuse men and get away with it so easily?"
Bob is treated as a victim of domestic abuse, unable to realize this fact and escape the situation because he and his friends don't think a woman can abuse a man. He eventually dies from internal bleeding and Alice is not implicated because the police decide that if there was a fight between them, he must have started it.
Alice kills Bob in one of her rages and she escapes justice. However, the guilt eats away at her and eventually she goes insane and has to be put into a madhouse.
Bob is mentally traumatized due to the abuse, resulting in harmful consequences both for himself and for Alice.
Alice's abuse is growing worse and worse, edging ever closer to crossing the line over into outright murder. Yet Bob's so-called friends don't realize how much trouble he's in, and Bob is afraid that the authorities won't take him seriously either, or arrest him, given that's what the law is in some places. Time is running out, and he doesn't seem to have anyone he can turn to for support.
Everyone likes Bob because he is a really gentle guy, suggesting him to dump Alice, fully aware of the situation and the incompetence of justice to treat a male victim of domestic abuse. However, Bob loves Alice and thinks he can change her, but, a day when Alice had a bad time at work, she beats him so hard than he dies. She invents a lame excuse and is believed. She is free of jail, but the people around her, being friends of Bob, start to alienate her and tell everyone what type of bitch she is. Because of that, nobody likes her and she is finally isolated, and dies alone without any friend or lover.
Bob, a Gentle Giant, finally loses it and fights back. Alice gets a new nickname (Stumpy) and Bob gets committed.