Lagergrenning 

To bake while wearing white underwear. The act is completed by posting a picture of it on the Internet.

I was Lagergrenning the other day when my clothes were dirty.

Lagergrenning by arloco December 9, 2012

lagergrinning 

That dumb smile you get when you drink too much beer.

Look at Jon over there, lagergrinning like a retard!

lagergrinning by TheDrunkenFool February 14, 2014