Twacism is prejudice against twins, especially identical twins. It happens when people assume that twins have the same personality or are going to act or behave in the same way, simply because they are twins.
It was really twacist when Ben and I had to share a chocolate birthday cake when only one of us likes chocolate!
Sam and Ben faced a lot of twacism after they both decided to play the same musical instrument.
The philosophy, morals, and inventions of Twa that are semi questionable to just plain retarded with no forethought or explanation for the idea beforehand
Logically enough it is something spoken by someone who is a twat, cretin or braindead fuckwit. Typically something uttered by the woke brigade such as "all whites are guilty of unconscious bias!" This is not the sort of drivel that J Saunders Redding intended when he urged people to "Stay Woke."