Similar to getting tea-bagged: The act of gently and carefully rubbing your grundel up against someone's nose, usually when they are sleeping or passed out. Often, the hairs on your taintwill tickle their skin and cause them to scratch their nose.
"Oh man, last week Tommy got grundelized by Jessica so hard."
See grundel, gooch, taint, asshole, hairy, nose, hair, butthole, face, teabag, grundelized, passed out, sleeping, love