Uh...honestly you looked like hell stumbling around, so I assumed you were either falling asleep or completely drunk. [A pause.] ...maybe stoned. Didn't want you to hit your head on the floor, that's all.

[Look he ain't judging, rich guy parties can end up really wild when money is not an objective so he's become good at helping others since he doesn't really like any of those things himself. If Yusuke tries to move, he'll let the other walk on his own again, but he'll be keeping an eye on him.]