Two DJs playing together. While one DJ is spinning a record, the other one is picking a new track. As they normally store their records behind them this usually makes the DJs face backwards on each other.
"Bro, how did your date go?" "So well, we hooked up and then I went over to Sasha's afterwards". "Bro, that's crazy". "You're telling me, I didn't even get time to shower in between, ran it back to back".
Hmmm. It is a single girl term....that I recently just learned. You may want to learn it too. Maybe a word that is popular on Tinder or Grinder. Meaning sex or whatever term you both decide, two days in a row. More than a one night stand. It must be that good or better. It must be great. Or more.
to sit back to back with another male and jerk off, usually backs are not touching, but if they are its a TBTB touching back to back.
tom: hey rod wanna toss a batch back to back ?
rod: yeah like the last time where you painted my back?
tom: no dude i promise this time, we'll make it a TBTB so there will beno surprises.