A strong minded man or boy, often gymnast and a show off, dates a lot of girls, steels and brown hair. Works hard and shows off his gynastic skills
Girl: "why would i date u, u have nearly gone out with the hole school"
Boy: " i know eight im such a jack
Boy: " i know eight im such a jack
by ~Da- banta~ June 11, 2015

a complete animal in bed he is the god of sex he is soo sexy normally has green/blue eyes they normally love there girl friends soo much they have massive penises aprox 12434234" long and they are verry loving in bed :) and they normally have girl friends called holly who are verry beautiful and awesome
jack
by jdfafas December 1, 2011

To jerk your dick until you cum into a girls vagina because it is too loose and you are getting bored.
Oh man, Miley's pussy was so loose last night that I ended up spending the last 20 minutes Jacking In her.
by UrMomsBujina July 15, 2010

by rasoool March 26, 2003

by the man1174 September 29, 2012

A man he gets angry very easily he is a Pe Teacher in his 30’s who loves saving people spines and is very strict when picking something up. He is a super healthy person who loves to make fun of his students
Jack is annoying
by Sas123jap456 June 29, 2020
