Sam and Dean in “Unfinished Business”

Sam

I'm surprised you didn't draw on him right there.

Dean

Yeah, well, first of all, I'm not gonna open fire in a freakin' pediatrics ward.

Sam

Good call.

Dean

Second, it wouldn't have done any good 'cause the bastard's bullet-proof unless he's chowing down on something; and, third, I wasn't packing, which is probably a really good thing, 'cause I probably would have just burned a clip in him on principle alone.

Sam

Getting wise in your old age, Dean.