Conductor: I don't know how you snuck aboard my train in Kansas City, but you're gettin' off here.
Bart: But, Conductor, sir, if you'll just let me stay aboard until Denver, my cousin will meet me - he'll pay my full fare.
Conductor: Oh, travel now, pay later? (Bart smiles and begins to climb back aboard) That'll be the day. Don't be a simpleton, mister!