Lug-Nut

 is a Raider in the year 2277.

Background
In a note to Lag-Bolt, Lug-Nut explains more about the origin of both the Naughty Nightwear and the All-Nighter Nightwear. It appears that Lug-Nut had the two pairs made in Virginia by a man only known as "The Tailor". It is obvious that they were made to be put to use under sexual circumstances, due to the character of the letter.

However, the questions of how Ronald Laren knew that Lug-Nut was in possession of sexy underwear and how Grady got into the picture are left unanswered.

Lug-Nut is also mentioned by Sierra Petrovita when asked more about Ronald Laren. She will start talking about how tough Ronald Laren is and will mention Lug-nut and two other raiders. The two unknown raiders were killed by Ronald Laren, who then punched Lug-Nut in the face.

Grady was most likely hired by Ronald Laren to retrieve the Naughty Nightwear, but was intercepted in Grayditch by Lug-Nut.

Interactions with the player character
Lug-Nut appears and confronts the player as soon as they loot the Naughty Nightwear as part of the unmarked quest Grady's Package, at this point the PC can give him the naughty nightwear, kill him, or pass a speech check resulting in Lug-Nut's backing off.

Unmarked quest: Grady's Package
Upon your taking the Naughty Nightwear, Lug-Nut will appear and demand that you give it to him.

Quotes
"I'm only gonna ask you this one time. Give me the Naughty Nightwear!"

Appearances
only appears in Fallout 3.

Bugs

 * On rare occasions, if you attack Lug Nut with a melee or unarmed weapon in V.A.T.S., a glitch will occur and you'll fall through the floor. (Confirmed PC, Xbox 360 and PS3)
 * When you get the Naughty Nightwear from Grady's Package and drop it before Lug-Nut appears, he will still demand it from you. If you give it to him and kill him when he walks away, you can loot him and find a completely restored Naughy Nightwear on him. The dropped Naughty Nightwear is still there!