I had a triple my freshman year. If I woke up hard, I'd wait for it to settle down before getting out of bed. Sometimes, I'd misjudge this though. My typical routine if I had time to shower was to strip off my underwear (the only thing I slept in) and drop it into the hamper by my bed and walk naked across the room to get my towel, which was by my door. My roommates and I saw each other naked all the time, so this was no big deal. Normally, I was in no rush to make it across the room, but a few times I misjudged how settled down I was and would have to make it quick dash when I realized my penis was about to spring up.