The act of making sweet love in the shower while a third party is evacuating their bowels within the confines of the same lavatory.
Kyle: "Brett, did you just take a shit in the first floor bathroom?"

Brett: "Yeah, what about it?"

Kyle: "What the fuck, man! Weren't John and Nikki having sex in the shower in there?"

Brett: "Yeah, man. I love a good Tijuana carpool!"
by Redness15 December 18, 2016
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Any coinage which has been inserted into one's ass and then recirculated. Becomes a breathmint if you can somehow fool someone into sucking on it.
"You know, sucking on pennies helps clear booze from your breath", offered Trevor.

"No shit", responded Carol.

"Uhh, yeah, that's right, no shit", a smirking Trevor responded as he handed over a few Tijuana breathmints.
by Herr Stehpinkler March 10, 2005
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Also known as a Tijuana tattoo, this is a tattoo found on someone far to young to have gotten it legally in the United States, thus indicating it was probably inked somewhere where laws are less strict, such as Tijuana.
I am really happy my girlfriend got that Tijuana tatt. Not only is it an awesome tramp stamp, it also is the first time I have seen my name flanked by two beer mugs and a fairy.
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I just got back from Mexico and a heads up if a girl asks you if you want a Tijuana threesome say NO!
by readybeeill October 27, 2009
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- verb; Ti-jua-na Kick-stand.
To engage in anal intercourse, doggy style while placing one's foot on the receiver's head/face, keeping it firmly pressed to the ground, resulting in a kickstand position.
Last night when I hooked up with that chick I totally did the tijuana kickstand to her.
by one-two January 27, 2010
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The act of eating KFC mashed potatoes and gravy off of someone in a sexual manner.
This nasty girl in my high school was "bragging" about how the way-older dude she was dating worked at KFC and would bring home buckets of mashed potatoes and gravy to eat off of her. I think she thought everyone was going to be titillated by her Tijuana Picnic but it just made everyone sick.
by DeeJayPee January 9, 2009
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Sperm that is ejaculated in the facial region.
Flash those pearly whites, senorita--here comes the Tijuana toothpaste.
by Bones March 4, 2004
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