I have heard this much in the series and movies of gangsters. For example, in the Sopranos, big pussy was the snitch is an informant that copera with authorities diciendoles things and events that occur within the mafia, it may be a u or gossiping.For example in my work is much as if snitch, are those people go chiefs and discussed things chatted among workers about bosses or the company in order to look good as it licks boots.