: Just a sip of liquor and he's passed out.
- Straight: After taking a sip of liquor, Bob passes out for several hours.
- Exaggerated: Bob passes out for a week after so much as smelling alcohol.
- Downplayed: Bob can drink a bit of liquor. Any more than that, and he's out.
- Bob rarely drinks and has not built up any tolerance.
- Bob is genetically incapable of tolerating alcohol.
- Bob has recently eaten an "inky cap" mushroom (Coprinopsis atramentaria), which ruined his alcohol tolerance.
- Inverted: Never Gets Drunk
- Subverted: Bob passes out after taking a sip of liquor...then it turns out he'd been drinking for several hours. That was the straw that broke the camel's back.
- Double Subverted: He'd just been drinking the weakest, girliest drinks imaginable and shouldn't be tipsy in the least.
- Parodied: It's all in Bob's head - when they tell him a soda pop is an alcoholic beverage, he passes out; meanwhile, he takes a Long Island Iced Tea (not knowing its alcoholic content) with no problems.
- Zig Zagged: Bob passes out after a small sip of liquor. But he'd been drinking all day...except he was drinking very weak liquor. But he'd still been drinking all day - anyone would pass out after that much drinking.
- Averted: Bob has a reasonable, if not extreme, tolerance.
- Enforced: "We need to show the viewers that drinking is bad. Let's have a seemingly healthy adult male pass out after a drop of liquor!"
- Lampshaded: "He's passed out already? The party hasn't even started." "That's Bob for you."
- Invoked: Bob doesn't like drinking, but succumbs to peer pressure, so he acts as if he's very drunk after just a sip as an excuse not to drink any more.
- Exploited: Knowing that Bob will be extremely drunk after only a sip, Alice offers Bob a drink in an attempt to make him slip up and reveal private information.
- Defied: ???
- Discussed: "That's it, Bob! First drink of the night!" "Well, you've seen the TV shows. Maybe I'll be passing out before I can bring the second drink to my mouth."
- Conversed: "...That's just a can of beer, right? How's he that drunk? Was the studio too lazy to film more than one sip of drinking?"
- Deconstructed: Bob is seen as less of a man and ostracized because of his inability to handle alcohol. People are reluctant to befriend him because they know he (and by extension they) can't drink.
- Reconstructed: So he finds friends that don't drink.
Back to...back...to...back...eh, here's the main trope
, ah'm gunnnnna (hic!) go lie down...