Rather than saying, "Oh snap!" one should yawn, "Ooooooooooo snap-time."
Roomate #2: Should we take a nap before dinner?
Roomate #1: I wish. There's no time, dinner closes soon.
Roomate #2: Don't worry man, we'll take a snap!
Roomate #1: Excellent. zzzzzzzzzzzzz
Roomate #1: Do you mind if I take a nap?
Roomate #2: Make it a snap.
In order of magnitude: daydream, doze off, snap, nap, crash, sleep.
Susie: "oh snap, me too"
John: "got a chicken sandwich for lunch"
Susie: "yeah same here, snap"
2. An exclamation to declare similarity or matching items, drawn from the card game in 1.