Top definition
When your fucking your girl and you suddenly decide to stick it in her ass.

Must accomplish this once in the month of January to achieve Just Jam-It In January.
RICK: Man my girl never lets me play with her ass.

John: Don't worry, you'll have a whole month for anal forgiveness.

Rick: Yeah, what do you mean?

John: Just Jam-It In January
by KRAVINIMAMAZING November 12, 2018
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Jul 6 Word of the Day
A polite term for shoving a lubricated probe into the Earth's hole to release gas.
Earth: I'm having trouble passing gas.

People: That's nothing a fracking won't fix.
by onehandcrabbing February 21, 2012
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2
Where your fucking your girl and suddenly decide to just stick it in her ass.

Must at least accomplish this once in the month of January, to achieve Just Jam-It In Januaray.
RICK: She never let's me play with her ass.

John: Don't worry dude, you'll have a whole month for anal forgiveness.

Rick: Yeah, what do you mean?

John: Just Jam-It In January!
by KRAVINIMAMAZING November 12, 2018
Get a Just Jam-It In January mug for your sister-in-law Jovana.