Ball gag

Francis, in the Broken Hills bar, will challenge the player to a contest of strength if the player's strength is 8 or more. The player's strength and endurance is recommended to be 9 or above. If you win, you receive a Big Frigger Power Fist. If you lose, you receive the Ball Gag.

He has two Buffout in his inventory, either use them on yourself, or for an even better effect, use them on him and wait 6 hours. Only don't save and reload after you've dosed him; the game forgets NPC drug effects after reloading, or even switching zones.

"A questionable sexual device. If you need to ask, you don't want to know."

Junk vends for $20 at the nearby General Store. Another can be found on an Enclave civilian.