Night spanking
When you wake up in the middle of the night restless, so you decide to Masturbate to pass the time.
I could't sleep with all drugs took, hmm.....I guess I'll do some Night spanking
good night spank off
using sexual gratifaction (masturbating) as a way to relieve stress or anxiousness so as to go to sleep.
Man, I was freaking out about that test last night, but then I had a good night spank off and got right to sleep.