What is John Thomas?
1.
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 .'
2.
Euphemism for male genitals.
"My, what a John Thomas he has."
See
3.
male organ (mostly used in England)
let me introduce you to John Thomas
4.
a soft pretzel, or penis
one jizzy johnny t, please!!
one jizzy john thomas
See