1- that deliberated by socially influential people to brand personalities they find inept or intolerable, if not simply unattractive; Regretfully, it's often used against those who don't wield the power their instigating counterparts do (e. g. dweebs,dorks,etc)
2- that deliberated by the malevolent youth to antagonize older folks for the way they look or behave
An all-too-uncanny example would be where the older individual compliments or merely converses with the younger, which the younger quickly gets irritated over for none other than the fact that the older doesn't share his/her aesthetic qualities. A follow-up excuse to justify the younger's reaction might be that differences in age & life experiences would therefore make it"inappropriate"for the older to talk to the younger.
3-that deliberated by self-entitling hotheads to overlay on those they deem are giving them unsolicited advances
The contact, though, is likely to be innocently unsexual & cordial by nature
4- that deliberated by moral hotmouths to unfairly fend off adults acerbated as suspected pedophiles.More often then not, any "evidence"/"proof"present is barely more than trite frivolity as found in the previously items.