Here is the full list of all 28 Genital Jousting achievements.
Start taking responsibility for you actions.
Make peace with a gaggle of swans. Their natural instinct is to kill.
Use the cake knife to defend yourself from wedding guests.
Be the only one locked out of an ouroborus.
Penetrate yourself in Traditional Mode.
Safely deploy all the fire extinguishers. For safety.
Move to the left.
Move to the right.
Good at video games. Terrible at sex.
Finish last in a Party Mode game.
Learn how to literally just navigate the main menu.
Penetrate God.
Reminisce about your care-free days as a cactus picker.
Swallow every worm.
Don't let sleeping dongs lie.
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.
Collect enough milk to fill the tank.
Have enough friends and enough controllers to play an 8 player game.
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.
Save yourself for that special orgy.