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A man who will have sex with a woman or a transgender woman but will not have sex with a man or a transgender man.

A man who prefers femininity over chromosomes.
Bill: Who the new guy? I heard he's Gay.

John: He's not Gay. He's Jack.
Jack by amy453332 April 30, 2024
A person who is always (or frequently) erect
Person: Jack was being such a jack during passing period
Jack by raccoonthemobboss May 9, 2024
Massive pp




That big
"Hello Jack I Wa-"
"Sorry my shlong hit you mid speech what is it you wish to tell me small child."
Jack by Larry Birb May 9, 2024
The act of inserting your finger into your friend’s anal cavity after he passes out on his stomach and wiggling your finger while thrusting in and out.
Eddie passed out drunk and ended up getting the jack.
Jack by Blackjack McGee May 10, 2024
A white man protagonist who loves gaming and pissing off people... That man Jack is a white man protagonist
Jack by Synaman May 20, 2024
really really nice guy who is so funny and sweet!! Also really cute and really will never fail to make you smile:)
me and Jack are hanging out!!
Jack by blacktrucklover May 23, 2024