Here is the full list of all 28 Genital Jousting achievements.
Good at video games. Terrible at sex.
Finish last in a Party Mode game.
Use the cake knife to defend yourself from wedding guests.
Reminisce about your care-free days as a cactus picker.
Safely deploy all the fire extinguishers. For safety.
Move to the right.
Move to the left.
Learn how to literally just navigate the main menu.
Penetrate God.
Swallow every worm.
Don't let sleeping dongs lie.
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.
Be the only one locked out of an ouroborus.
Marry yourself in Abstinence.
Get all of the rings in Lord of the Rings.
Win Lights Out in under five seconds.
Everyone survives having sex in a trash-compactor full of needles.
Have sex in the Date Night graveyard.
Penetrate yourself in Traditional Mode.
Save yourself for that special orgy.