punchline 

the part of a joke that makes everyone laugh or delivers the "punch"

"Oh man, the punchline of that joke made me piss my pants"

punchline by Billko August 11, 2005

PunchLine 

The witty part of a joke or rap. Also ends the joke or rap.

Rap: I met a girl named selest with big breasts, when she touched me , i was hard like a spanish test.
Joke: How does a zombie get pleasure.
He monsterbates.
Those are punchlines.

PunchLine by Dunno what the f** that is. March 6, 2009

punchline 

The part(line) of a rhyme(mostly used in freestyle battles), that personally attacks the opponent. This line is a necessity to ensure your win and to please the crowd. A punchline should cause sting to a crowd or a reader. (sting is when a crowd goes OOOOOOH,,,or ohhh shitttt sonnn!!!, after hearing a punchline)

the example if from FrancisM, a goldmic.com battler and he faces jism who got raped in this battle...15/0

i put the punchlines in brackets, as you can see there are two...after these punchlines, a crowd would reply by going OOOOOOOH...these punchlines as you can see, are targetting jism's sexuality, thus making it personal...

"i call this game wid DIS-BRITISH-CRIP//wish he could "mute" or DIMINISH-LIP//((look he took "pink" as A-GAY-FETISH-TIP))//(("jism"i got more ppl on my "dick" than dresses IN-YOUR-CLOSET))//"

((the punchlines are in double brackets))

punchline by FrancisM February 8, 2007

Punchline 

The moment when someone punches you in the face to make his point.

- Dude, what's wrong?
- Ugh, I've just got punchlined.

Punchline by MoonSister October 23, 2010

Punchline 

Genocide

Tim: I’m planing a mass punchline

Jenna: you know that highly illegal

Punchline by professional_anus_tickler May 10, 2023

Punchline Pirate

An annoying sidekick who frequently interrupts comical anticdotes by anxiously blurting out the final line, an act that greatly diminishes the humor of the story. This person likely desires attention.

Don't even bother trying to tell any stories around jim. He's such a punchline pirate he'll wait til you set up the whole story then ruin it at the very end.

Punchline Pirate by lenneord January 21, 2009

Punchline Rapper 

A rapper who uses his lyrical skill (or lack there of) to sway the listener away from the central theme (or lack there of) of the musical presentation. Following the formula of "rhyming just to rhyme" the rapper will awe you with jaw dropping punchlines, showing that his or her musical presentation may or may not have any meaning behind it.

Mississippi based rapper, Tha Joker is notoriously known for his punchlines. With his wide array of lyrical skill, some may argue that his music has no meaning behind it. In his song entitled "Skinny Jeans", Joker proceeds to rap about anything but the title at hand. Instead swaying punchline after punchline leading into the hook. The pattern continues from there...
The term "punchline rapper" could be debatable from there

Punchline Rapper by Mister Skittles October 27, 2010