1. A perverted old man living in his mother's basement. He does not have the decency to take a clean shower and spends his worthless days watching pr0n and browsing 4chan. He often tried to fit with the nerds on the internet by attempting to stay "hip" and "fresh".
2. A pedophile above the age of 65.
3. Your dad.
John: This guy wants to add me on Facebook, but he 72 years old!
Mary: It's probably some horny old man. Ignore him.