Found a cheap fixie tossed out on the curbside, while taking a walk. Brought it home, gave it a quick tune up.
It had forward facing turned up bars, that kinda looked like cow horns.
Since the frame was plain black, I used a white paint pen to draw a cow's face logo on the head tube.
Then wrote "moo." on each side of the top tube.
Used it a few months, then put it back out on the curb for someone else to enjoy.