A sexual act where an attractive middle aged man who often enjoys cycling steals the dog bed and television from his son’s house and uses it to lure the dog back to his local gym. He then proceeds to dress up in tight pink Lycra and perform a handstand by the exercise bikes with butter rubbed along his huge dick so that the dog sucks him off while watching other hot men cycling on his stolen TV. This is usually accompanied by extremely loud screams from the man to attract as much attention to himself as possible as well as gleeful noises from the sucking dog when it’s fur is splattered with tasty white cum.
“What’s that screaming? Is there a dog in here?”

“Don’t worry, it’s just someone doing a Dirty Jacob’s Dad in the corner.”
by MantleLikesKids November 6, 2022
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The process of having a can of monster shoved inside your ass by your best friends after him catching you trying it by yourself
"hey wanna try a dirty karl jacobs?"
"leave me alone get the fuck away from me never speak again."
by KARLS_MONSTER_CAN September 4, 2021
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When you stick your tongue down your little brothers butthole, licking the poop out, then sharing the poop in a wet sloppy French kiss.
I gave my little brother Tucker a “Dirty Jacob”.
by AmongUsTard October 13, 2023
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a dirty jacob is when a guy fucks and cums in a girl's pussy, then forces her to suck him off and clean him up.
Guy1: "bro i gave ashleigh a dirty jacob yesterday"
Guy2: "no way man! did she like it?"
Guy1: "hell yeah she took it like a slut!"
by shadyladyfucker123 February 14, 2023
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When you take a shit and you’re running low on toilet paper, so you have to reuse the same piece by folding it over multiple times
Person one: Damn, there was fuck all toilet paper in there!

Person two: Sorry dude! Did you have to do a dirty Jacob?

Person one: yeah, I folded that thing reeeal good.
by Whomstst October 8, 2022
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