The action of sniffling while snorting at the same time. Usually not actually snorting anything, but makes it sound like you are. Usually only used by internet users.
He said he was sniffing drugs, but he was just snifflesnorting.
I was about to finish until I heard a snifflesnort. Shit got weird.
Alt. Example: When you're balls deep and about to get lost, someone walks in and a snifflesnort ensues. The cross between an "Oh, what the fuck that's my sister and holy shit you have a hairy ass."