dundersnap 

Often used to insult someone for being stupid for falling on someone's trolls, mainly used by nerds but exceptional qualified gamers.

Another meaning is qualified to snap your head back because of how thick your skull is.

Katsy just called qween a dundersnap!

sans is fake, so he is a dundersnap.

dundersnap by The True IDIOT November 12, 2021

Dunderstand

To dun or don't understand.

I dunderstand what you're driving at.

Dunderstand by maltar January 7, 2011

dunderstand

(v) To believe you have great insight or comprehension of a word, concept, or situation but to be entirely wrong about it (i.e., eisegesis). Portmanteau of "dunder" and "understand".

He thinks golden showers are all about gold coins. That's some serious dunderstanding.

dunderstand by Talmanes December 22, 2013

dangersnap 

Noun. A snapchat photo in which the phone was in danger of becoming lost or damaged.

Taking a snapchat in the bathtub, damn that eas a dangersnap girl.

dangersnap by thedirtydozen December 24, 2013