(verb) To attempt to seduce someone only to end up messing up by falling on your face, tripping, making a weird face or any other form of derping.
Cassidy: I tried to seduce that cute guy at the museum but I accidentally tripped on one of the exhibit ropes.
Liz: Ha! You did a good job at sederping him.
Liz: Ha! You did a good job at sederping him.
by the mitten November 19, 2010