From:  Urban Dictionary: Restless Dick Syndrome

Restless Dick Syndrome

When you try and and wake up your bed-mate in the middle of the night by poking her in the back with your burgeoning hard on.

Cathy: “I didn’t get a wink of sleep last night. Fuckin’ 3 a.m. and Ronnie gets a bad case of the Restless Dick Syndrome! There oughta be a pill!”