Penile Flutter

An involuntary muscle spasm located in the male genitalia. This spasm can last for two to seven seconds, and causes can include sexual stimulation, sexual over-stimulation, urination, electric shock, or extraneous sensory perception. No medical attention is required, although you should contact your doctor if you experience a penile flutter lasting longer than four hours, or if redness or discomfort occur.

"Oh man, that girl at the end of the bar totally gave me a penile flutter."

Penile Flutter by Dr. Tobor March 4, 2011

flattery 

Insincere praise to a person or topic in order to achieve something, usually to further one's own interests.

"Hey Linda, you hair is the best in the world!"
"Quit with the flattery, you won't get far by lying to people"

flattery by SwagBit March 8, 2019

flutter-blast 

A long, powerful fart that causes farter's cheeks to smack against each other.

Next time you have a flutter-blast to cut, please point your ass away from me.

flutter-blast by LaughingAloud September 10, 2005

Fanny Flutters 

When u get a tingly feeling in ur vaginal area

Maura : that guy gives me fanny flutters

Fanny Flutters by Arabiana June 24, 2019

Flutterguy 

Fluttershy (The Pegasus pony from My Little Pony: Friendship is Magic) with a deep black male's voice, as depicted in the episode "Bridle Gossip"

Applejack - "Good gravy, girl! What's wrong with you?!"

Flutterguy - "I don't wanna talk about it."

Flutterguy by TheBronyGuru August 15, 2012

Flutterby 

The origin of the name for an insect with colorful wings that is currently called a "butterfly", is a "FLY" that eats "Butter". Going even further back, the root of the name goes back to the dutch origin "Butter Shitter", because the dutch thought the insect poops on the butter.

Therefore, because of the incredibly non-sense name for this insect, I propose to re-name this beautiful insect as "Flutterby", which is a far more accurate name for it.

What a beautiful flutterby!

Flutterby by speak August 19, 2013

flutterpants 

Someone whose pants you can see moving as they fill and collapse with frequent and powerful fart action.

Fuck you flutterpants, why don’t you go stand next to another good friend?

flutterpants by Dr Bunnygirl August 17, 2019