The ridiculous bingo prizes Bulma offers up. Including a plane, a piano organ made of gold, and a Castle! Shu gets really excited over 3rd place being a years supply of canned ham.
Pilaf jealous of it all gets a spray can and sprays and draws doodles all over the gifts.
Mai: Real mature...
When Trunks asks Mai to act as his girlfriend, both Pilaf and Shu thought he was referring to them.
Goten's reaction to Trunks having a girlfriend. "So cool..."
Then there's the "skit" they put up in an attempt to steal a Dragon Ball. Trunks' dialogue sells it:
Trunks: I want to break up.
Trunks when he discovers Pilaf, Shu, and Mai wonders if Pilaf is a monkey.
Shenron getting nervous when he hears that Beerus is there.
"What? He is here!?"
You can even see him anxiously sweating as he speaks.
Gotenks' attempt to fight Beerus, which ends with Beerus literally giving him a spanking and making him apologize. Not only is this funny, but also rather satisfying considering how obnoxious Gotenks usually acts.
If you do the math based on the established timeline, both Bulma and Mai are lying about their age!
Which Oolong constantly points out towards Bulma, much to her chagrin.
Paur(cheerfully): But don't lose because if we die, then its all your fault.
Beerus eating Wasabi straight by mistake. He winds up bouncing around so much from the pain that he accidentally destroys a few planets/moons by plowing through them.
And then Whis just casually knocks him out. For three years.
During the ending, it's revealed that during Vegeta's beatdown on Beerus, Goku was watching the entire time before he interrupted. Of course Bulma is rightfully angered, slapping Goku... then Vegeta joins in by saying he deserves some of her signature slaps (much to Goku's horror)
In the same scene, when Goku pokes fun at Vegeta for going nuts over Bulma getting smacked by Beerus, much to Bulma's delight and Vegeta's rage. He even throws in a mock Vegeta impression to boot.