A smuff is simply just a vape.
danny:*taping vape*
Max: Yo pass the smuff danny.
"If you don't want a Yart i got Smuffs."
a person in power that doesn't do anything about climate change
Clive Palmer and Scott Morrison are smuffs
A combination word between the words "smut" and "fluff". These words are commonly used in fanfiction to describe what kind of fanfiction you are reading. Smut being dirty and fluff being cute. Smuff however is a combination of both
"guys last night i was reading a ton of smuff on tumblr".