noun
General Slang
18+
John Thomas sign
JON TOM-us SYNE · noun · vulgar
Mature Content
May contain explicit language some viewers may find offensive. Intended for adults.
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John Thomas sign In A Sentence
Origin & Usage
British medical humour; 'John Thomas' = penis. Also 'Throckmorton sign.'
Variants
Throckmorton sign
People Also Ask
What is the 'John Thomas sign'?
A tongue-in-cheek 'radiological sign' joking that the direction the penis points on a pelvic X-ray reveals the side of pathology.
Is the John Thomas sign real?
No — it's medical joke-lore with no diagnostic validity; 'John Thomas' is British slang for the penis.
What is it called in the US?
The American equivalent is the 'Throckmorton sign'.
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