Folleränna
A Swedish term used when the stomach is acting up to the point of FUBAR. The person caught with Folleränna typically spends a lot of time on the toilet upon notice.
-Where'd Karl go?
-Oh he won't be back for a while, he caught a pretty bad Folleränna!
-Oh he won't be back for a while, he caught a pretty bad Folleränna!