The act of pouring spoiled milk all over your penis and shoving it inside your partner's anal cavity, which had a cheez whiz inserted. Then let it ferment for three weeks. Before ejaculating inside.
"Smile did you see me and my bitch did the Monterey jack a couple of days before." "Yeah, I saw you on the dinner table at your stepparents. You sick fuck."
by younevabeentoorgnifyouneva August 4, 2021
Get the Monterey Jackmug. When jxckluvsxims runs a hoat steamy Bobby up your arse at about 23mph and 200rpm and geez your friction burns
by BigSpanker87 September 16, 2021
Get the The jack specialmug. by Poopiebutt69 September 10, 2019
Get the Jackmug. jack (noun)
Definition:
A mostly normal dude — chill, funny, maybe even kinda cool — but has one glaring weakness: an unholy thirst for a Discord kitten. Like, man’s entire personality shifts when someone says “meow” on mic.
Example:
• “He seemed normal till I heard him call someone his Discord kitten.”
• “Bro’s acting like a total jack right now.”
Related terms:
• kittenless — Jack’s default state.
• meow mode — When Jack’s trying too hard to impress someone on Discord.
• discord dad bod — The physique Jack develops while waiting for his kitten to join VC.
Definition:
A mostly normal dude — chill, funny, maybe even kinda cool — but has one glaring weakness: an unholy thirst for a Discord kitten. Like, man’s entire personality shifts when someone says “meow” on mic.
Example:
• “He seemed normal till I heard him call someone his Discord kitten.”
• “Bro’s acting like a total jack right now.”
Related terms:
• kittenless — Jack’s default state.
• meow mode — When Jack’s trying too hard to impress someone on Discord.
• discord dad bod — The physique Jack develops while waiting for his kitten to join VC.
Jack
by Not jack 1234567 November 11, 2025
Get the Jackmug. 
( named after Jack the Ripper : to take hostage, kidnap, threaten, rape, or sodomize someone at knife point
Nobody knows to this day if Jack the RIpper tried to knife-jack his victims or if he used more subtle forms of psychological manipulation on them before killing them.
by Sexydimma December 8, 2014
Get the to knife-jackmug. An insult worse than any other insult. Far worse than ur mom gay or ur dad lesbian. If said to u, u die.
Person 1: ur mom gay
Person 2: ur dad lesbian
Person 1: ur uncle jack a necrophiliac
Person 2: *Dies*
Person 2: ur dad lesbian
Person 1: ur uncle jack a necrophiliac
Person 2: *Dies*
by Nick Dimeson June 2, 2018
Get the Ur Uncle Jack a necrophiliacmug.