Oh god. Cole will offer it though and when he doesn't take it she will shrug watching Billie take it and passing it to Logan. 

Oh lord. Poor Zachy.

"Hey! I'm not crazy!" She'll pout. Then Billie will throw an arm around her.
"Clary, babe, yes you are, but we're all crazy here. You're in good company." She'll tell her and Alex will sigh 
"Zach, I'm sorry, Clary and Billie got a little drunk before hand." Alex will shake his head.
"Well playing the Alex drinking game you get fucked up if you can't hold your liquor." Billie will tease him, and he'll just glare.
"I never approved it."
"Logan! Logan! Make us shots that's another one!" Clary will giggle.

(Because I could see it being on a day they're all like fuck it! Let's get fucked up!)