Top Definition
when you go to bed with a hard on cause you think of your hot girl friend all the time
before going to bed, he thought of his girlfriend and ended up suffering rom night wood then waking up with morning wood.
by jhraolvh;ie December 01, 2009
It's like morning wood, but you get it before going to sleep. It's an erection that just keeps you awake for a while and you can't fall asleep with it. One simply has to work it out.
Mom: Go to sleep honey!
Orlando (to himself): Damn this night wood, I'm really tired and I just want to go to sleep.
by White Xmas December 26, 2013

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