snot up

snot up (third-person singular simple present snots up, present participle snotting up, simple past and past participle snotted up)

1. (transitive) To make something snotty (covered in snot), as a handkerchief or tissue, or to similarly cover with other bodily fluids, like a dog breathing on glass.
2. (intransitive) To sob in a way that produces snot.