To convey in polite words that fellatio, intercourse, and anal sex is likely to happen in the same night, or a general inkling that something great will happen.
"the next scene they had the BasesLoaded and i couln't tell where they stopped and she began!"
By Krissie
Bases Loaded
The term used when a man has sex with two women, at the same time, with the intention of getting them both pregnant and, in most situations, has no intention of providing for the child.