Playing I-Spy

I recently taught the little ones to play I-Spy which we now play in the car but when it comes to the three-yr old, the game goes in a totally different direction:

1:I-spy something beginning with 'b'
2:bird
1:nope
3:bag
1:no
2:bucket
1:nah-uh
3:book
1:nope
(then it starts getting a little out of hand)
2:bear
1:no
3:bangkok
1:nope

3:ok, we give up, what is it?
1:a racing car!
3:a racing car starts with a 'r' not a 'b'
1:ok, I-spy with my little eye something beginning with 'r'
3:a racing car
1:yes! you got it!

.....and this happens over and over and over and over again..... lol!