The penis. Usually used in British English, but also sometimes in US.
Sung by Eric Idle in Monty Python. The Meaning of Life (1983): ' Isn't it awfully nice to have a penis / Isn't it frightfully good to have-it-on / It's swell to have a stiffy / It's divine to own a dick / From the tiniest little tadger to the world's biggest prick / So, three cheers for your Willy or John Thomas / Hooray for your one-eyed-trouser-snake / Your piece of pork , your wife's-best-friend , your passing or your cock / You can wrap it up in ribbons, you can stuff it in your sock / But don't take-it out in public or they'll stick you in the dock and you won't come back .'
by Karl-Artur Haag August 1, 2005
Usually a large man that loves bojangles, working with children, and Saying phrases like “Hey Buddy
“Hey did you see that guy he looks like a John Thomas
by Backdoor Bill September 15, 2018
1)Possibly the sexiest man on Earth. He possesses great wealth and power. Despite many other definitions, it does not represent male genatalia.

2)Great athlete. A person who no matter what sport he may play, is gifted at it. Also very intelligent.
1) Look at that John Thomas strutting his stuff at the club. Neva seen moves that fresh.

2) John Thomas sure is a good football player. Almost as if he's on steroids.
by Redbananaflame909090 December 26, 2013
Good looking, muscular, chick magnet, gifted at every sport, smart, caring, definitely a keeper, has a big cock
Look at John Thomas, he's so cool I want be his best friend
by Dat-Boi69 February 20, 2018
Penis, Slong, Cock

Also referring to homosexual males
Did you see that johnny t on that guy?

How many John Thomas' have you sucked?

That guy seems a little John Thomas to me, if you know what I'm sayin.
by LVN702 August 27, 2008