A combination of the words "twat" and "sweat" (pronounced like "sweat"), indicating the sweat that a twat produces.
"Man, this whole strip bar smells like tweat."
by AnonymousGirl October 03, 2005
to take pictures of what you are eating, or what you are going to eat, and post them on twitter
Girl: Michael tweats every meal he has!
by sgill88 May 26, 2012