To wildly swing one's dick around, as if imitating a helicopter, whilst making eye contact with those around and softly saying "Belllaaaaa"
Bella entered the room. John had that look in his eye and she just knew he was about to do a flailing bella.
by Timothy Fiddlewicket November 21, 2020

by pinkstreak January 19, 2016

by Mexicanloving101 October 10, 2017

To lash ones arms and or legs about in a seemingly uncontrollably and senseless manner while shuffling ones arms and legs, while high as hell on any number of illicit narcotics.
Kevin has been awake for like t days again and it looks like he is going to flail his way over here!
by Dawnhennessey May 28, 2022

by soccerboyrobloxdude911 November 16, 2018

by 14kkk88 December 2, 2018

Urban Flail
Adv.
(Er-bun Flale)
The act of placing 12-18” long pieces of duct tape upside down on a busy thoroughfare, complete with ends twisted around payloads of feline and/or dog feces.
The Urban Flail should not be performed against anyone you do not have deep distaste for. Strangers are perfectly acceptable as well.
*use with caution*
*avoid routes popular with law enforcement*
Adv.
(Er-bun Flale)
The act of placing 12-18” long pieces of duct tape upside down on a busy thoroughfare, complete with ends twisted around payloads of feline and/or dog feces.
The Urban Flail should not be performed against anyone you do not have deep distaste for. Strangers are perfectly acceptable as well.
*use with caution*
*avoid routes popular with law enforcement*
“Dude, I can’t believe what he said about your sister.”
“You’re right bud. It’s time for an urban flail.
“You’re right bud. It’s time for an urban flail.
by Choam Nomsky December 1, 2017
