lol honestly, whatever i am wearing to work on commutes...
for longer rides, either soccer shorts, my dads super short 70's running shorts, or these butt padded chamois mountain bike shorts.
oh and these:
lol not me grabbin some crotch. they are by Hell Yes clothing. they take some used salvation army pants/slacks of varying makes and material, cut them below the knee, articulate the knee, add some buttons and a strap at the bottom to cinch them tighter, and use the extra material that was cut off to make a cell phone pocket. i like mine allot, nice for city riding.