when an unusually tall girl is giving a man a rusty trombone in the 69 position while pissing in his mouth
"That Josh Watson is a lucky man dating that ckick basketball player, she's so tall that she spit valved him last night."
by H2zZ December 09, 2004
Top Definition
The valve(s) found on a brass-wind instrument that are opened to release saliva accumulated while playing.
You're rattling. Empty your spit valve.
by Chad June 20, 2004
A Woman who cannot seem to swallow semen. She spits it out.
"Hey man did you know Morgan is a major Spit valve?"
by Kozcup May 19, 2016
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