Laura, "Maybe stupid question, but isn't he supposed to get erection on me only? "
ehm... erection sometimes is Spontaneous.
A simple example: if you (male) have to pee, it can happen if you can't pee but you have to wait.
another example: can happen during the sleep.
another example: can happen if you see something beautiful . Hei! your CB stop your pleasure. a male CB would stop both pleasure both erection. double effect. too much maybe. It's like everytime you see something horny... a magic hand appears fro nothing and gives you a painful tweaks on your arm OUCH! Ehi, look at that movie actor OUCH! Hei today my male school friend is beautiful OUCH! a a merciless and inexorable hand. Do you like it?