[quote name='Rodimus Donut']^ Where I worked we also had special names for the usual odd ball customers.
Nerd Guy: Very Quite, rarely spoke, he was about 40 years old. He was a good customer and very loyal to us, however sometimes he asked the most random questions like, "Didn't the last boss of Grandia 1 have more HP than the last boss of Grandia 2?" He never looked you in the eye and was always rocking back and forth, he would often point at stuff he wasn't even looking at which confused me. I think he had autism. For some reason we created a myth that he visited the woods and ate bacon with squirrels.
Stubbles: This guy always had a five o'clock shadow and came in with with his gf alot. He always looked like he hadn't taken a shower in a week. He rarely ever bought anything and when he did he would try to bring it in just a day or two later claiming it didn't work. The first time we gave him his money back since we couldn't replace it. But the second time I knew he was lying. He was trying to return Draconus for the DC, he claimed it frooze at the memory card screen. I told him we could replace it and he didn't want to cause he was scared the same problem would happen again. I quickly hooked up a DC, popped the game in and showed him it worked fine on ours and it must be his system or VMU. After about 5 minutes of arguing he finally brooke down and said he just didn't want it and he didn't like the game. I told him that's not a valid reason to return something and said I could give him trade-in credit. He didn't like it, but he had to take it. I won
Convertable Kid: He was about 9 years old, he had a lisp and was obsesed with DBZ. We carried those PS1 DBZ imports with the Game Wizard to play imports on your American PS1. The DBZ games & Game Wizards were very expensive at the time so he could never buy one, but he always came in an asked about them. Since he had a lisp he didn't call the Game Wizards "Converters" but "Convertables" hence his name. It was hard for me not to laugh everytime he came in asked, "Do you stwill hawve the convertables?" He thought these games were the greatest in the world just cause it was DBZ. He couldn't have been more far from the truth. I was such an a-hole when I was younger, making fun of little kids with lisps.

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Haha, yeah we have a few names for oddballs as well.
CODE BOY: A 40 year old man who repeats the same 2 codes everytime he visits the store.
THE BROTHERS GRIMM: Two brothers (two fat kids) who always come in the store looking for games their father refuses to purchase. One will always end up running out of the store with his father chasing him around the parking lot. They never look you in the eye and always stutter their words.
RESIDENT EVIL BOY: A 30 year old man who will always buy only Resident Evil games. He has purchased multiple copies, trades them in, then buys them again. Will always ask about Resident Evil and will always talk about it.
HAKEEM OLAJUWON AND OTTO ROCKET: Two kids who always skateboard to our store to play the Xbox 360 interactive and trade in busted gamecube games. One reminds me of the HAKEEM OLAJUWON from the Rockets NBA team back in the 90s and the other looks like OTTO ROCKET. Both annoying and always lean on the counters.
THE SESAME STREET GANG: Four blonde kids who always come in and just stare at the television playing the monthly TV crap. They always talk pokemon and play the DS interactives and buy world of warcraft trading cards.
THE SPITTER: An old lady who comes in often that buys PSP movies and always trades them in. She has bad hearing and will always louldly say "HUHHHH" while spitting all over your face while talking.
THE WII BROS: Two guys who come in and will always say Wii is the best and everything else sucks. They buy all the fluff Wii has and always continue to support it. They also despise FF7.