1 definition by FinallySophmore

1. Two characters in a nursery rhyme, that fall down a hill.

2. Also known as "Jackin and Jillin"
a male Jacks off
a female jills (drills.)

1. Jack and Jill went up the hill. Jack fell down and broke his crown, and jill came tumbling after.
2. "Dude, everyone was jackin' and jillin' last night at the party."
by FinallySophmore August 23, 2006
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