The ultimate three course penetration...
oral, vaginal, anal

From STEM, an abbreviation short for "Science, Technology, Engineering and Mathematics", a STEMlord is a pejorative term for a particular kind of person who has studied in these areas at university or works in these fields who holds a pretentious, condescending attitude to anyone who has studied in any other fields, particularly the Arts and Humanities. They typically believe themselves to be more "intelligent" and "rational", while generally remaining incredibly ignorant outside of their areas of expertise and having the charisma of a rotting pig's backside.

Three sexual acts performed in the same night. Occasionally ending in dessert.

1. Blowjob/titty fuck to completion

2. Vaginal Sex
3. Anal sex

A sexual act involving:

1: A threesome.
2: Using all three female orifices in the same session.