Friend is a major fan of Graham/Billy
I send this ficlet:
A Dirty Fan-Fic by Ani:
'Finally! He's coming.' Graham was grinning with the thought. Always the impatient one waiting for Billy to finish.
The MS engineer was still trying to catch his breath as he wiped some sweat from his brow before speaking up, "You're too rough sometimes, Graham."
The blonde gave a half shoulder shrug, "Just how I operate. I do what's natural!"
"Well, your Flag is fixed up." Billy realized he smeared grease onto his forehead and was now trying to clean off his hands. He was actually covered in the stuff. It would be accurate to say the man was dirty.