Tumbleweed is a name for a teacher who constantly travels around the room when the class is busy at work. When the "wind is blowing", the teacher moves around the room at rapid speed, traveling from desk to desk (or table) just to make a good conversation, or to check up on how your doing, then travel to another student right after the teacher is done talking. When the "wind isnt blowing", that means that the tumbleweed (teacher) sits at the desk or computer in silence in their chair while the class does independent work.

Dusty aggregation of plant matter rolled along the ground by the desert wind. A cliche of Western movies, emphasising silence or stillness, e.g. as the hero rides into an apparently deserted frontier town. Often used in connection with the death of a conversation after one participant unwittingly reveals that they are a moron. See also tumbleweed moment.

A roaming party, where the sole intention is to roam, whilst partying. Thus giving the effect of a bush party that moves, i.e. a tumbleweed.

good ass weed

Something to say during an uncomfortable silence or awkward pause in conversation. the conversation is so dead that a tumbleweed could be blowing through the people you are hanging out with like a desert.

Something to shout aloud when someone has said failed in an attempt to be funny.

Someone who's obsessed with Tumblr

where someone tells are bad joke and there is a awkward silence afterwards.