It's in my bucket list too
Maybe it's an idiom....like "Run it up the flag pole & see who salutes!"
Or a euphemism: "Tall and tanned and young and lovely....I wanna weigh THOSE potatoes!"
No, it's actually literal. At least I've never heard any idioms with potatoes in Portuguese, except for "a sua batata tá assando", which means you're about to get in trouble or something bad is coming your way.