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Used as a substitute for 'mother fucking'.
That rubber duckin idiot wrecked my car
by Reginald VanDeKamp March 10, 2009
The state of your penis before full erection. Half cocked to three fourths cocked. Pants with a slight bulge, not pitching a tent. Kinda half boner.

Can be used as Rubber Duck
I was up in the club rubber duckin.

I tried to stick it her ass but I was only rubber duckin.

I cant lift that my penis, I'm only rubber duckin right now.
by RobertDuckinIII July 04, 2009