Mechanic!Kurt? Sort of. Prompt from Sofia Michelle!
Ah, the pun in the title. This is what I live for. (Although the joke would be better if they were actually the human body kind of nuts, not metal kind of nuts.)
Nuts
Kurt jumps at the arms that suddenly envelope him. "Blaine, you scared me," he giggles and continues loosening the nut that's holding the broken pipe in place.
"Whatcha doing?" Blaine asks, putting his head on Kurt's shoulder and looking at him pushing and pulling at metal with his greased hands.
"Fixing this car engine," Kurt says, starting to break a sweat at the stubborn nut. He wipes his face on his sleeve- Blaine leans out of the way- and finally manages to loosen the nut's hold and take out the broken part.
"Yes, I can see that," says Blaine. "Don't forget we have a date tonight. You have to be done here by six."
Kurt sets aside the parts he's holding and leans back into Blaine's hug, kissing his temple. "Blaine Anderson, when have I ever forgotten a date?"
Blaine sticks out his tongue. "Just making sure." He looks at Kurt more a moment, appreciating his stained, messy, sweaty boyfriend. "Do you want some water?"
"Oh god yes, I love you so much," Kurt whines and plants a kiss on Blaine's lips. Blaine rolls his eyes and pulls away. "Thank you, baby!" Kurt calls out.
"Yeah, yeah."