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.
by Katan7 July 05, 2009
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
by koygotune April 22, 2011