Pelini
A violent rage that cannot be controlled, often expressed in Tourette's-like cursing accompanied with demonic facial contortions. An angry sense of entitlement that will cause you to treat anyone around you with contempt and physical brutality, including game officials, innocent cameramen or possibly your own team.
Yo--I said I wanted those eggs over medium, I'm about to go Pelini up in here!!!! @#$%$$%!!!!!!
Pelini
The act of getting caught disparaging your customers/supporters/fans.
Frank's biggest customer just overheard him talking shit about him. He really pulled a Pelini there.
Goin' Pelini
Getting so mad that your face becomes distorted to the point where you look like a bull flehmening a cow in heat.
Dude was so mad about the cat taking a shit on his chalupa that ended up Goin' Pelini on that pussy.
bo pelini
An expletive laced rant expressing outrage on leaving a position you didn't want anyway.
Tom went "bo pelini" the day he was fired from his job.
Bro Pelini
Common demographic of 40 to 55 year old men at Planet Fitness that look exactly the same as Big 10 Nebraska Cornhuskers former head football coach Bo Pelini (currently head coach at Youngstown State University)
Dude, I saw like four or five separate Bro Pelinis pumping iron today. Wild