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1.
a flexi is an incredibly gifted female athlete who has extraordinary abilities of contortion, incredible power, amazing speed, extreme aggression, massive sex appeal and an exceptional physique.
holy hell, did you see that roller derby jammer? what a star-studded flexi!

when that flexi body slammed the other player, i thought it was all over.

if we had a whole team of flexis, we would annihilate those amazons.

serena williams is a total flexi.
by lustylove February 02, 2010
 
2.
A super erect penis.. That is kind of smelly but has a few weird hairs and a few boils and pimples.. Its not a good thing.. It also bends to one side..
Jeremy has a total flexi..
by TruthSayer3451 September 27, 2011