A company that advertises t-shirts with lame jokes on them on Urban Dictionary, just like SnorgTees and PalmerCash.
The difference between those companies and CafePress is that CafePress adverts do not have hot chicks wearing their shirts.
Much like SnorgTees a lot of the jokes on their shirts attempt to be 'nerdy' while still trying to be understandable by normal people. Thus the shirts become too un-intelligent for nerds and too nerdy for everyone else.
A cafarella most likely has a terrible sense of humor and acts like a 4-year old with autism. Is very uninformed about sex toys. Has an irrational fear of anal beads and gay men. Most likely was dropped on the head as a baby many times and is slow to process any information. Voted in high school “most likely to live in a white van and be a perve.” Has the dildo virus, cannot process common sense. For example Butt Plug