Deletion of Pile-on

Comment: common term used by many people, but the lack of reliable sources is a concern, if reliable sources aren't found within the timeframe of this afd, then '''weak delete''' per  & 
Stance: keep
Cited policy: Wikipedia:Verifiability (WP:V||WP:NEO)

Comment: per 
Stance: delete
Cited policy: Wikipedia:Wikipedia is not a dictionary (WP:NEO)