Sudden transition from a state of sobriety to undeniable inebriation without an interim period of tipsiness.
I was out last night with friends and as we left the bar I was snap drunk and had to go home.
When you're drunk and start taking snap chats of yourself and sending them to all the wrong people. Aka exes.
I hate waking up in the morning and seeing I sent drunk snaps. I can't even check what I sent.