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Coolo - is the misspelled pronunciation of the spanish word culo wich means ass, so when somebody is called a coolo that doesn't really mean something cool.
Sarcasm - you are so cool that im going to call you a coolo.
Insult - you are a big stinking coolo.
by Katan7 July 05, 2009
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a perversion of both the english word cool and spanish word cuelo, meaning ultimate coolness, neat, awesome
Sealab 2021 is very coolo.
by Dustin January 25, 2004
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a derivative of "Cool"

also in 1337:

man that is so coolo
by Kaimana December 01, 2003
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