Off-beat Susan 

Off-beat Susan
n.

1. A bizarre sex act in which a male receives anal intercourse from a female wearing a strap on phallus.
2. The act is "off-beat" in the sense that it is disturbing and weird and incorporates the feminine name "Susan" due to the distinct gender reversal.

Ted recieved his first off-beat Susan from Jane, and the sick bastard enjoyed it.

Off-beat Susan by Joe/Eric October 28, 2004