He grabs the grub and rips it off of his jeans and holds it in tight grip. It's not enough to hurt the grub, but it does restrict its movement. Karkat doesn't even look at it right now.]
You will not fucking do that to me. I will suffer many fucking indignities but that is not one of them!
[One of them, however, is being waggled in admonishment at a human by his older self... but at least grub!Karkat seems to be enjoying that!]