Sherdog forum thread:
"SWEEDOS - a name combined from the location where these tools live (Sweden) and of their mancrushes from New Jersey, the Guidos. Saturating Stockholm clubs with hair gel, hair spray, and anal lube, Sweedos are typically younger than the Guidos. Born from rich parents who never forced them to do any remotely difficult job in life, Sweedos never properly developed testicles and are often gender-confused. Unlike the Guidos, Sweedos do not display dissonance between their looks and their actions. Whereas Guidos try to look metrosexual while simultaneously trying to look tough (often producing very hilarious results), Sweedos both look and act metrosexual, which is often misperceived by some as being straight. Sweedos are also world-renowned for their uncanny ability to remind many men of a girl who they used to have a crush on."
Personally I just view Sweedos as Guidos with blonde hair--they don't have to actually be from Sweden. Hey, you'll know one when you see one.