If I get up in the middle of the night and don't want to bother turning the lights on, I just sit on the toilet with it bent downwards. It takes a while, but it does happen if I relax enough and have enough patience.
This one morning I had to run to the bathroom right after waking up with a raging boner. I stood there, waiting, waiting, waiting. It finally began to trickle out, stronger and stronger, still with a full on erection.
Then I farted...
I peed all over the back of the toilet and up the wall.
Spent the next few minutes laughing my ass off while cleaning it up. Needless to say, my wife was glaring at me.