Antmanning 

Verb - the act of putting a flaccid penis in a girl before getting erect, therefore expanding inside her like Antman.

I had trouble getting it up last night. I got stuck Antmanning it.

Antmanning by DanMckeoff August 19, 2018

Antmanning 

The act of inserting an unerect penis into the anal cavity as it gradually increases in size.

Hey babe, let’s try antmanning tonight.

Antmanning by TheIrishPuma759 March 23, 2019

Antmanning 

When a guy puts his dick in a girl soft and then eventually it erects.

“I thought your penis was soft until you started antmanning”

Antmanning by Cjhnkrs1128 February 25, 2020

Ant-Manning 

Starting anal while flaccid but expanding after entry

Paul Rudd and Josh Brolin were recently seen Ant-Manning on the set of Avengers Endgame.

Ant-Manning by Jason Howlett March 23, 2019

Antmaning 

When you dive into her booty hole soft and then grow to a impressive size.

Friend: wanna come over

Me: Nah bro, I gotta go do some Antmaning at your mom's house
Friend: Bro come on-
Me: I said no and if you dont stop asking itll be your sister too

Antmaning by yeet yate yote March 27, 2019

Animanning 

A person or an unwanted friend who pms's for absolutely everything, with one of his hand busy with the phone n the other on his crotch to ease himself with the pain from bleeding.

Bro stop animanning for once.

Animanning by Djoshi (DJ) January 12, 2015

Ant-Manning 

The practice of one, entering another's asshole without consent and stretching out to occupy the most space. The sole purpose being to damage one as much as possible.

Thor: Yo team I totally ant-manned this Asguardian hoe last night.

Tony: Wtf is Ant-manning...?

Ant-man: When you jump in someone's ass and EXPAAAAAAAAAANNNNNND

Tony: .....

Ant-Manning by GIGA-Shippuden March 23, 2019