A loud, booming laugh, that is not justified, but rather spurred by the most unfunny things. It may often be followed by laughing snorts.
"Man did you hear Jenna's peragallo when I said hi to her"
"Yeah man, I could hear that peragallo from all the way down the hall. WTF? That girl is such a geek."
The act of urinating on an animal.
Man, John is a sick nut. He spotted a chipmunk chilling in the park yesterday, and got close enough to unzip and Peragallo it.