College students are using an app to express outrage over a 'Muslim bomber' Halloween costume

An app that lets you peek inside the culture of college life has surfaced an interesting controversy going on at Penn State University. 

Students are using an app called Yeti Campus Stories to express their outrage or support for another student who dressed as a "Jager Bomber" for Halloween.

Students make "Jager Bombs" by dropping a shot of Jagermeister into a glass of Red Bull and downing both drinks at once. The student's costume is a play on that. He imitated traditional Middle Eastern clothes, then wore an army vest stacked with Jagermeister and Red Bull cans. 

Then he posted a photo of the costume to Yeti.

Yeti creates social networks for colleges where students show off images of college life. It launched in March and has gone crazy, with hundreds of thousands of daily active users, adding over 10,000 new users a day, the company tells us.

Here's what happened next...