If the person had receipts, original packaging that matches serial number to the product
Then this person may have a better case then you would have if brought to civil court.
If the person doesn't have this stuff, then it's basically just your word against his.
Someone can call the cops all they want, the cop will just say that the issue has to be settled in court.
Don't worry about what fatty says. Buy him some tasty kakes
Dude answer the door, and explain the situation and if they dont believe you, ask his parents how come you have had his wheels for 2weeks and your bitch ass friend didnt mention anything about them till now ?
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."
- Albert Einstein