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1. spit valve
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 Dec 9, 2004 add a video
2. spit valve
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 Jun 20, 2004 add a video
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