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When the catalyic converter is taking out of the car to reduce back pressure and increase performance. It is illegal though, only if u get caught. it would be hard and almost impossilbe to pass smog check also
Dam ur car stinks, is it running a straight pipe?

Im running a 3 inch down straight pipe wiht a racing cat back system yo. word
by Thomas Van February 24, 2005
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Jan 22 Word of the Day
Whenever making a congratulatory remark, this is what you say. Made popular by Kamala Harris when she and Joe Biden won the presidency.
Sam: Wow, I can’t believe we just won that relay race!
Cat: we did it Joe 😭😭
by Zozogabobo December 04, 2020
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2
Straight piping is an aggressive form of deep throat oral sex. This is when a girl lays on her back on a bed (or some other object) and tilts her head back over the edge so her throat is no longer at an angle. In effect, it forms a "straight pipe." Often seen in pornography.

Yo man I banged this girl last night, she was like a pornstar dude! She even let me straight pipe her!
by Dick M. Down March 17, 2008
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3
1 (noun, automotive): An exhaust system mod in which all mufflers and catalytic converters are removed, literally having a "straight pipe" as your exhaust. Doing this will increase noise and free up HP. It is very illegal almost everywhere except in M town

2 (verb, informal, sex): {aggressive, rough, hard sex, usually used to describe rough oral sex, face fucking
1: God damn it I'm sick of hearing my neighbors straight piped Honda everyday at 3 AM
2: He Striaght piped me and now my neck is sore
by icantthinkofausername777 May 01, 2019
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5
When you fart with no underwear on. nothing to muffle the sound.
One night me and my girlfriend were doing 69,and with no warning, the loudest straight pipe I ever heard.
by Pete the Plummer February 08, 2004
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6
Straight piping is an aggressive form of deep throat oral sex. This is when a girl lays on her back on a bed (or some other object) and tilts her head back over the edge so her throat is no longer at an angle. In effect, it forms a "straight pipe." Often seen in pornography.
Yo man I banged this girl last night, she was like a pornstar dude! She even let me straight pipe her!
by Dick M. Down March 13, 2008
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