anal beastie 

When you dominate someone's anus so thoroughly that the other person cannot take a shit for approximately 5 days.

I gave Kelsey an anal beastie last night, but she should be fine in a about a week.

anal beastie by Gary Coleman IV June 17, 2008

anal beasting 

having a big nob shuved into ur ass

having sex with king kong would be being anal beasting

anal beasting by james(baby-dick) botham November 7, 2008