Cult Sperg: An individual in a group, who idolizes a charismatic leader (who uses thought reform and financial or other exploitation), who takes to social media and other internet outlets to throw tantrums against any and all people who slightly criticise their beliefs or their leader.
Common usage to refer to a small group of extreme hard-core Star Citizen gaming fans, a phrase popularized by popular software developer Derek Smart.

When you're being horny (especially around friends) and as a result shame ensues.