I'm mixing up some loose mathematical / set theory vocabulary with imagery of a sexy time.

If you have an infinite number of gay men with dicks in other men's butts, stacked, in sequence, on an infinite sized floor or bed...

The straight version of this is guy gal guy gal pairs forever, with the gals having strap-ons in the guys asses, and the guys having their dicks in I guess either the gals pinks or stinks.

A 'constraint' is very loosely in set theory / math terms ... basically a way of saying... these formulas work, this equation has existing solutions, but only if we 'constrain' some of the factors.

So I am 'constraining' the vast amounts of people who are just straight, to people who are straight and also kinky enough to jump into the strap on / pegging conga line.

Unironically, that doesn't involve any homo, as no gals are touching gals, and no guys are touching guys.

EDIT: Its sort of a very simple kind of aperiodic tiling.

https://en.m.wikipedia.org/wiki/Aperiodic_tiling

Why, yes, I am both autistic and have a dirty mind, how could you tell?