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
Get the flailing bellamug. by Dorkygirl786 December 2, 2022
Get the Bellamug. 
by pinkcactus December 29, 2022
Get the Bellamug. the 2 amazing bsfs . everyone jealous of them bc they wish they were like them xo grace and bella is the most iconic duo
by bellawella August 17, 2023
Get the grace and bellamug. by Kc_TrashRat_gay June 8, 2023
Get the Bella Wmug. bella’s tend to be shy and quiet at first, but after getting to know them they’ll let you in so you can see their true colors. They’re caring and honest, and they’ll never break your heart. Trust me on this. They’ll never leave you, but if you leave them their best friends will come for you. Bella’s are also very active and sporty, but get nervous while playing in front of other people (besides their friends and teammates) If your lucky enough to be friends with a Bella that’s very special and you should never let them go. If your lucky enough to date a Bella NEVER let her go. She’ll be there for you at all times and is always trustworthy and honest.
Never let a Bella go. Be there for her, she needs the support. Gain her trust, it’ll be hard but once you do you’ll be thankful:)
by urgirlbella February 9, 2021
Get the Bellamug.