"I'm looking for something that will help me on my dates. You see I can get dates just fine, just I am terrible at them and they never ask for a second one. Do you have a book on it or I don't know what else you might have that would help me?"
"Don't worry I have just the thing." The strange man disappeared into the back room. While he waited Jon chanced a look around. There was nothing. Just a counter, cash register, and a small empty room with a door in the back leading to wherever the man had gone. He didn't have to wait much longer as the strange man returned holding a can of... body spray?
"So some knock of cologne will suddenly make me super popular with the girls?"
"Yeah, that's pretty much it. I'm sure you will be able to figure it out. Oh and here's the manual, I recommend reading that before you use it."
Jon wasn't dumb he used spray deodorant before and was a human that lived in the modern world. There wasn't anything to using a spray can. Nonetheless, he accepted the manual, he wasn't going to be rude.
"And how much will that be?"
"Oh don't worry son, it's on the house go enjoy!"
He wasn't going to turn down something free. Even if it was a slightly dodgy can of dubious make from a brand he had never heard of. He had a date with Carla that night. Maybe he would try it out. It couldn't hurt. And at this point, he was willing to try anything to get a second date. Even if it was some body spray.
(I plan on this being loosely based on Firingwall's The Date and The Date part 2 from DeviantArt, a unfortunately underutilized idea)