Uncle Hank (played by Stanley Herman) is a character in the movie 'Requiem for a Dream' who likes to partake in group activities such as watching drug-addicted women perform ass-to-ass.
Can be used IRL as an innocent sounding alibi:
You: I’m just going to help take Uncle Hank to the grocery store.
Girlfriend: I didn’t know you had an uncle...
*Proceed to ass-to-ass type activities*
Uncle Hank: ASS-TO-ASS!