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1.
someone that is considered a pussy for whatever reason, even if its a really small reason.
"chuck me a pringle?"
"no"
"fucking fassio"

"do it you fassio"
"FASSIIIOOOOOO MANZZ"
by R3N0 October 04, 2008
 
2.
1. an arsehole, prick, pussy - all in one
2. someone who fails to show up at an appointment or gig
3. someone who likes to commit petty crimes and get their friends arrested

4. someone who tries to get an invented word to catch on
5. someone who votes for the tea party
Ben: What a fassio!
Shalini: Takes one to know one
by hersexcellency May 18, 2011
 
3.
just a general insult that sounds cool
that sansom kid is such a fassio
by milzy is massive September 19, 2008