Top definition
a muscle not commonly worked out in the normal gym. best exercise is the camel toe machine at the PHUHS gym. If not its best to have sex on a regular basis
Im gonna go work my flactoids.

Damn Stearns has real nice flactoids
by Joshua Stearns May 09, 2005
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2
A muscle on the opposite shoulder of your dominant hand. Bad play in sports is usually because of a pulled/strained flactoid.
Tiger Woods: That was a terrible shot.
Phil Mickelson: I know. I pulled my flactoid the other day.
by Dr. Earving July 28, 2009
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3
Sucking the left over love juices of your friends MILF's dildo after it's been successfully used in her mouldy clam.
I heard Billie-jo enjoyed that Flactoid
by BJobA June 17, 2011
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