Here is the full list of all 28 Genital Jousting achievements.
Marry yourself in Abstinence.
Be the only one locked out of an ouroborus.
Win Lights Out in under five seconds.
Good at video games. Terrible at sex.
Finish last in a Party Mode game.
Penetrate yourself in Traditional Mode.
Learn how to literally just navigate the main menu.
Move to the left.
Move to the right.
Penetrate God.
Reminisce about your care-free days as a cactus picker.
Safely deploy all the fire extinguishers. For safety.
Swallow every worm.
Don't let sleeping dongs lie.
Use the cake knife to defend yourself from wedding guests.
Make peace with a gaggle of swans. Their natural instinct is to kill.
Use all the "supplements" you can for maximal gains.
Submit your monthly physical report.
Eat a disgusting amount of popcorn.
You should see a doctor immediately.
Die a lot of times in your nightmares.
Start taking responsibility for you actions.
Collect enough milk to fill the tank.
Have enough friends and enough controllers to play an 8 player game.
Get all of the rings in Lord of the Rings.
Everyone survives having sex in a trash-compactor full of needles.
Have sex in the Date Night graveyard.
Save yourself for that special orgy.