When you lie down in bed, finally start going to sleep. And right then an there, right when you are LITERALLY about to fall asleep, you think you are falling off a cliff and you jolt up, wide awake, just sitting up in bed. This is actually completely normal and has to do with all of your muscles clenching together while falling asleep, then releasing all in about half a second.
by comanderdude247 September 13, 2013
Get the sleep start mug.when your bowel movement is so vigorous in your slumber that your body proceeds to dump your diharrea into your bed without you knowing.
by joeyback April 4, 2019
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