To automatically assume that what someone is presenting is too extraordinary to be true and furthermore is most likely a hoax. This radical skepticism is the opposite from the gullibility of the autobeliever, or one who automatically assumes extraordinary claims to be true at face value.
The moon landing? I'm going to autohoax that. Show me the telemetry data please.
A combination of butthurt and triggered, butt-triggered describes the pre-offended church-lady types who are always looking for something to be offended by.
"Wow, these social justice warriors are so butt-triggered over every little imagined slight."
Buy a
butt-triggered
mug!