Lyric discussion by BillyBudd2 

Cover art for Never Tell lyrics by Violent Femmes

So I just read the lyrics to this song and read others' interpretations. I agree with the other posters that this song is about some sort of crime committed by likely a gangland type figure. I don't think it is about molestation, there just isn't enough there to suggest that. The way I interpret this song is from the point of view of a comically dense criminal. Most of the song he spends patting himself on the back about not snitching to anyone and his ability to keep a secret but in the song, by my count, he tells at least two figures: a priest (pardon me father). Now it's not clear he told the priest, but that's usually what you go to confession for, and the seal of confession can be broken if someone confesses a crime. The second person he tells is his girlfriend/wife. He threatens her if she tells, but since he also tells her that he's likely to get killed if she rats him out, what's to stop her? He sounds like a jerk anyone so it would be a good way for her to get rid of him. I interpret the line 'don't you know nothin', you never tell someone' to mean she either ratted him out or told a friend who ratted him out. I also think he might have told the police (the 'mister' in the song) since he's clearly cooperating with the police (I'll do what I can, but not anymore understand) so maybe he's telling they something but not the whole story. This situation is weighing on his mind, and he's telling others so maybe he can't keep his mouth shut. I take the phrase 'volatile substance' to be literal - either drugs or bomb making materials. I also do think the narrator is relating all of this from hell where he continues to praise himself for never telling, when in fact he did, which makes the song morbidly funny.

[Edit: Correction.]