When you don't understand something and you are super pissed.
When you don't feel like saying "fucking understand"
When fucking understand just doesn't quite display the needed emotion.
When you don't feel like saying "fucking understand"
When fucking understand just doesn't quite display the needed emotion.
by Desiree Aho January 09, 2008
underfuckingstand - Understand, with "Fucking" inserted in the middle, making it an exclamation of frustration or, in some cases, a joking statement.
by Steve October 24, 2004
by raymondamantius August 15, 2019