underspooped 

When someone isn't nearly freaked out enough by spooky occurrences.

"Mark, your quintessential macho douchebag, was clearly underspooped by the noises coming from the other side of the door."

underspooped by MrTumnus92 December 25, 2017

understooded 

to understand somebody, commonly used as a question

60+9 is 69. Understooded?

understooded by gfkl March 24, 2021