Good natured humor of untruth that isn't ambiguous like normal sarcasm. Can be a statement that's obvious exaggeration or something too dumb or campy to need saying in the first place.
Examples of post-sarcasm:
-"You got a face I could go gay for, Mikey."
"Aww, shut up, Mills"
-"How'd that date go last night?"
"Fuckin, we were fucking for WEEKS."
-"Fuckin for weeks that's a pretty good amount of time."
"I had to take a break every so often to pay my bills."