Spigtorum recticitus

Q: What's the name of the space between your balls and my anus ?

A: This space can have many names, depending on the activities of the players involved.

For instance, if you and I were simultaneously receiving oral sex from a young lady, that space is called a screming eagle. If we're both simultaneously having intercourse with a lady, it's called a spit-roast.

However, during the normal course of events it's generally referred to by the latin "spigtorum recticitus", which, translated, means, "the space between your balls and my anus".