T.H.O

Titty Hard On the act of ones nipples contracting and getting "hard"

Maggie was embarassed because all her class mates could see her T.H.O through her shirt.

by nobodythatuneedtobeconcernedwith May 18, 2003

T.H.O.

Titty Hard On.

Coined by William Boland in 1989. Although most likely used before then.

That girl was either cold or she liked what she saw cause she had a major T.H.O.

by Libraryguy June 25, 2009

T.H.O.

A person with a Titty Hard On.

Dude check it out, that girls has T.H.O. ... it must be really cold outside.

Damn, she has major T.H.O., she's cutting glass!

by Peanut Butter May 20, 2006

T.H.O.

Abbreviation for titty hard on. Pronounced like though.

Gadzooks take a look at Amy! Totally has T.H.O. going on.

by THE JERALDS LOVE HANK January 18, 2023