Overstand

Overstand is a random shower thought I had when I thought of the word understand. "Under" in the word "understand" would imply that there is a word "overstand" with "over" in the name. So basically, it's the opposite of understand.

(Person A:) Hey, did you know that koalas *blah blah blah*?
(Person B:) I overstand
(Person A:) what..?