What's Eating Gilbert Grape

Tucker: How's momma?
Gilbert: She's fat.
Tucker: Come on man. She's not all that big, Gilbert.
Gilbert: What?
Tucker: Listen, I saw a guy at the state fair that was... a little bit bigger.
Gilbert: A little bit bigger?
Tucker: Look, all I'm sayin is that she's not the biggest I ever seen, okay?
Gilbert: Tucker, she's a whale!
Tucker: Well take her out for a walk once and while.
Gilbert: Take her out for a jog!
Arnie: She's a whale! Tucker, she's a whale!