noun, used as a suffix
Slang suffix attached to a descriptive word to characterize a type of man, often in online or youth slang. Common in compounds like フツメン (ordinary-looking guy) and キモメン (creepy guy).
あの人はフツメンだけど、性格がいい。
That guy is just an ordinary-looking dude, but he has a good personality.
キモメンって言われたことがある。
I've been called a creepy guy before.