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1.
N. Usually means man with large cock

Every girl wants to go down on him

Who wouldn't want to banged by him?

Adj. Man with large penis

Really attractive
That man is a Jestin.
by Mr. Big Stick January 13, 2010
 
2.
Another word for jokin
Becky: Someone just got beat up outside skool!
Jess: aw, ur jestin.
by Becky Lovatt March 25, 2005
 
3.
if someone is kidding or fooling around. also can be called "joshing". Originated in Towson tower B room 611 between three bright people named hans, hawkeye, stopsign and scorpion.
Jess is cool. sike just jestin' ya.
by Stopsign February 13, 2005