When Grandpa Ivan remarks to Angus' mom that she doesn't give her son credit for being strong, this is how she replies:
Meg: Did you know that when he sits down in the cafeteria, the other kids act like they're being thrown off? They call him "Bigfoot."
Ivan: He never told me that.
Meg: He never told me that, either. You know what they did to his underwear? They ran it up the flagpole, just to humiliate him. And he gets up, and he goes back there every single day! So don't you tell me I don't know how strong my son is. I know.