When you're on the verge of sleep but you're dumb ass body makes this abnormal and completely ridiculous twitch that you have no control over and it wakes you from your peacefulness and leaves you thinking 'goddammit' while you're friends look at you with stupid expressions on their faces and wonder why you're scowling in silence.
And then they laugh at you, the pricks.
Child 1: Hey what was that you were doing in your bed last night? Looked like someone tasered you.
Child 2: Lurching. It sucks.
Child 3:*Laughs* I'm gunna Urban Dictionary this shit!