He does a fake bird call to summon Lassie. Then he "stalks" his father Paul, shooting a suction-cup arrow into the truck Paul is loading.
The following exchange ensues:
TIMMY [dances around Paul]: Me want'um scalp! Me want'um scalp! Me want'um scalp! Me want'um scalp!
PAUL: Okay, me surrender!
RUTH [approaches, laughing]: Listen, you cowboys and Indians. You'd better watch the time.
PAUL: That's right! We've got the church supper tonight.
TIMMY: Oh, boy! A church supper!
PAUL: I'll be in as soon as I get these tomatoes loaded. I've gotta get 'em ready to get to market tonight.
RUTH: Oh, Paul, do you have to drive them in tonight?
PAUL: We've got bills to pay, remember?
RUTH [chuckling]: I wish I could forget.
RUTH [to Timmy]: All right now, big chief. Uh, please put'um heap big bow and arrow away and wash'um dirt from face.
And not much has changed. I doubt the average American would object to this, or even notice anything wrong, in 2014.