A web surfer who stumbles via StumbleUpon. See also stumbulation and stumbleblog.

Literally everyone, ever. Including the writer of this definition.

a large cone of marijuana which will make you stumble as you smoke it. The effects of such a cone can be severe.

when a person is a large distraction to the opposite gender

It truly is a fat fucking cone.

A person who stumbles the internet randomly. The generally find what they set out looking for in the beginning... nothing!