look up any word, like swag:
 
2.
The act of menstrating heavily. The start of menstration.
Husband: " Honey lets go out on the town?"

Wife:" Im all crampy and just want to lay here, I don't want flowmotion"
by Max Pontiac February 12, 2007
 
1.
To move with a swift flow of swagger, or to act in a thuggish manner.
That nigga gets so many bitches because he's got his flow motion on.
by rich ross November 23, 2010