Jonah was right to be concerned about JD's state of inebriation, not because she drinks a lot, but because she's a mega lightweight. She's had one drink and she's... more drunk than even a moderately sized teenage girl should be off of one drink. But JD's instinct, even when trashed, is to try and look good, so she's wandering around the party trying to look helpful.

"Do you need water?" she asks the first girl she runs into, and she has to brace her weight on their shoulder, because she lost her balance. "Let me get you some water."