Love swells 

When you give such a good dicking thay swell up

Damn I gave Trudy the love swells last night, she can't walk straight today

Love swells by EWC2K17 June 2, 2017

Smells like monkey ass 

Something is odorous like an animal bottom.

Damn Bruto, since you cooked chili it smells like monkey ass in here!!!

Smells like monkey ass by I, Wreckerrr November 2, 2016

Yer da sells the Avon

Scottish insult: "Your father is a representative of the Avon company"

The peak, the maximum, the be-all and end-all of humiliation. The ultimate insult of one's self, one's family and one's dignity. Consider all hope lost in your life if this is said to you. Use sparingly against enemies.

"Yer a tit"

"Fuck off pal, yer da sells the Avon"

*kills self*

Yer da sells the Avon by purefanny565 August 29, 2016

Senior Swell 

Lifting weights all the time during your high school senior year because you want to get ripped before going off to college

Stuart: "Hey man wanna come lift after school? I need to get big"

Andrew: "SENIOR SWELL"

Senior Swell by anwimasm April 8, 2012

all swell 

meaning all’s well and then some

I’ll check-out the party and text you either ‘stay away’ or ‘all swell’.

all swell by ΔиłĦ☼иצ ߀₡ʞ October 1, 2012

the corn smells nice 

According to Chuggaaconroy in the TheRunawayGuys LP of Pikmin (episode 13), possible slang for pooping on someone's chest.

More practically, an example of very specific slang terms that have little actual purpose as they are incredibly niche or raunchy, yet sound like perfectly rational phrases (like deflower either meaning losing a flower... or sex.)

I just went on a date with my fiance, and let's just say the corn smells nice.

You could say some perfectly reasonable phrase like, I dunno, "the corn smells nice", and someone would tell you "OH MY GOD, DO YOU KNOW WHAT THAT MEANS?!"

the corn smells nice by Camwood April 11, 2019

That weiner smells funny 

That weiner smells funny, l wonder where it has been? This is the quest to see if something nasty happened to that food!

That weiner smells funny!!

That weiner smells funny by I, Wreckerrr November 17, 2020