First of all, it was meant in Jest.
Second, Given Danny Messer's blue-collar, tough guy background, it is something that the character *might* do. It's not any different than putting fish in someone's car or locker as has come up in previous phrases and haven't elicited any complaints before.
Third, as a Danny/Lindsay shipper, I'm just a bit frustrated with the way things were handled in last night's episode and this phrase was my trying to inject some levity into it.
If anyone is offended by that phrase, please accept my apologies.