A word denoting a typical liberal, likely to support the Democratic
party without question and soften the edge of any leftist movement that threatens the establishment. Derives from the desire for the
American parties (Democrats in particular) to be 'Big Tent'.
Tentheads often try to disarm any sort of radical movement in the name of 'keeping peace' and then go on to cry about needing the kind of
change those radical movements would have brought.
Also synonymous with 'Shitlib' and 'Libtard' (though Tenthead is more often used in leftist circles.)