The act of jacking off while viewing other people's snap chat stories.
I was snapjacking last night and busted on Bella's storie
by Nathan.swank July 23, 2016
The challenge of attempting to ejaculate within the 10 second window of a snapchat.
Before opening snapchat, he gathered all of his supplies in order to attempt a successful snapjacking session.
by z.x.c.v.b.n.m.a.s.d.f.g.h.j.k. March 13, 2014