1)
Verb: To instantaneously and uncontrollably jizz in
one's pants upon the thought, mention, sight, presence, brief musings, discussion, pondering, or stalking of a person, place where person hangs out, or thing the person likes, loves, or maybe looked sideways at.... or maybe he or she just thinks about it... maybe... you
will find out.... you must find out!
2) Noun: An act of instantaneously, and uncontrollably jizzing in
one's pants as a result of the aforementioned reasons.
Girl 1: So I heard you
saw Terry Hatcher yesterday.. She's so pretty!
Girl 2: OMG yeah I know, my ex-
boyfriend always used to tell me how she was such an instagasm (it's part of why we broke up, can't have my man chasing another woman).
Girl 1: What's an instagasm?
Girl 2: Look it up on
urban dictionary, duh!