Sam Winchester: Like, if, for some reason, he were out of commission.
Dean Winchester: Which is weird, considering that he’s supposed to be untouchable, unless he is not… untouchable.
Sam Winchester: So, he has an Achilles heel.
Dean Winchester: Well… I’m saying he has a weak spot.
Sam Winchester: Yeah, that’s… that’s…
From Supernatural – Season 15 Episode 8: ‘Our Father, Who Aren’t in Heaven’ (15×08) | Produced by The CW