A fast-paced text messaging session; involves rapid responses, funny, quick witted, smart ass remarks and/or sarcastic jabs. Usually has a definitive end when one participant's response has achieved the height of hilarity, wit and/or sarcasm; often used to flirt and often leads to a sextion
KJ: You talk to "cute guy" lately?
JJ: Yeah we had a hilarious textsion last night!
KJ: Oh yeah?
JJ: I was killing him! He couldn't text back fast enough!