look up any word, like fellated:
 
1.
when you do something for fun, there is no purpose for the action you are performing. it is usually something very immature and stupid.
Boy 1: i just took a picture of my poop!
Boy 2: uhm, why?
Boy 1: just for Shits n' Gigs !
by Kvanny February 27, 2011
 
2.
Shitting your pants and giggling at the fact that you did something irrefutably retarded. Namely, bumping threads.
"Bump for shits n' gigs"
by Menstrualanus August 17, 2011