You'd think the Catholic Church would be in favor of condoms... less DNA evidence.
Catholic Condoms
Explanation
Explain Bear
Alright, listen up, buttercup. The joke here is that the Catholic Church is against condoms, but if they used them, there'd be less DNA evidence left behind in, uh, *ahem* certain situations. Basically, less evidence of diddling. You probably don't know what diddling means, but I ain't gonna tell ya.