i'm not your napkin; do not wipe your hands on me
when someone tries to wipe something on you, you say "i ain't yo napkien"
flex your face; smile; grin; look up; be alert
while throwing a ball, shout "flex yo face" to alert the catcher the ball is coming;
may also be used while taking a photo to get people to smile
© 1999-2015 Urban Dictionary ®
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