"Er... Good question. Just kinda a dark sort of lemonade, innit?" Hard to tell, honestly. He#d never thought about it that much. "Look, I'll get one and we can share. Can't hurt, right?"

It probably could hurt somehow, but Crowley was trying to play all of this off as no big deal in order to calm Aziraphale down. he wasn't sure how successful he was so far. Making their way over to the bar, he slid over the money and ordered a coke, then just smiled at Aziraphale as they waited. "It's not so bad here, right? Just people having fun."

Loud fun, admittedly. And in some cases drunken fun. But still!