David Foster Wallace was like, Art must be sincere! We must use every tool in the linguistic toolbox to cut through sentiment and dishonest cliche and build fresh ways to reveal the power and reality of unironized emotion.
And Mister Rogers was like, Basically the same thing, but without any shame or pretense or fear of sincerity.
I’d like to point out that in this scene Peggy is having CRIPPLING emotional issues with an aspect of her body. Bobby is not only comfortable enough with his body to not give a fuck, he’s aware enough to use that to bring his mom up from what might be the lowest he’s ever seen her.