The act of forcing ones foot into their own underwear

After a night of heavy, HEAVY drinking, a girl wants to have sexual congress with you. However, your pink crayon isn't up to the task. You're determined, however, and decide to cram Ol' Floppy inside of her. You're determined to get it up, but it ain't happening. You keep flaccidly stabbing away with zero results. She goes home deeply disappointed.

1. When two homo sapiens have sexual intercourse on top of a yac. Presumbably in the Saharan Desert. The yac does not have to participate.

The act of inserting two fingers into a female orifice to aid in inserting your penis, much like the way a shoe horn is used to put your foot into a shoe.

When a person straps a dildo to their head and shoves it up someone's ass.