The masturbatory act one performs only and just because is home alone.
- What did you do on Friday?
- I had no money to go out and my parents went to a funeral outside the city, so I just went for a good 'ol Macaulay Culkin.
When your having sex with a girl or guy(whatever your into) pull out before you but an blow it in your hand rub them together and slap partner on each side of the face.
Dude I did The Macaulay Culkin to this girl last night.