The title was founded by a man who witnessed a vehicular automotive mishap that launched a rim high beyond the sunset hence the title "Skyrim" then later transmuted into the ongoing in-joke, Skyrimjob.
Dude 1: Holy shit man did you see that?
Dude 2: Dude that rim went SKY HIGH!
Dude1: Oh my God..dude (dude 2 looks at dude 1 with anticipation)
Dude 1&2: a skyrim!
Dude 1. Yo, have you heard of this game called Skyrim? its wicked man
Dude 2. Yeah I've heard of this other game too, its called Rimjob.
When he or she is giving you a rimjob and right as you fart you scream "FUS RO DAH!!!" and on the DAH part you release a huge fart on the person's tongue.
Partner 1: I'm gonna release a big fart! Fus...Ro...
Partner 2: Don't give me a Skyrimjob!
Partner 1: DAH! *rips a huge fart*
When you are giving your sex partner a rimjob, and then stop for a moment to shout in the dragon language into their anus.
Bobby was giving Diane a nice rimjob, and she was moaning excitedly. Then, the Nord blood stirred inside him, and he shouted "Iiz Slen Nus"! And Diane's butt instantly spasmed with a dragon-sized orgasm. It was a skyrimjob.