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1.
A sexy beast of a man. He is often seen with his foot up on a chair, showing off his amazing muscles. Petrellas are funny and nice. Many people dislike Petrellas because they are jealous.
Whoa, that dude's ripped! What a Petrella!

Man, Petrella's such a dick.
Pssh, no way, he's awesome. You're just jealous.
by Sometimes I do February 13, 2010
 
2.
Usually a giant plug, otherwise known as a duster, someone who is not very good at something but think they are
Yo he thinks he can play basketball what a petrella
Vanilla is on the dream team, what a petrella
by plug4321 November 14, 2007