Toddler's really have no size perception

Zach has started pointing out things on our drive home each night, naming each one and saying it over and over again followed or preceeded by "Mommy." He needs to know that I know that he knows the names of things.

So last night we were driving by Stokely's Marine, like every other night and Zach was saying "Mommy, boat! BOAT, Mommy! Right der, Mommy! BOAT!" I was agreeing with him and telling him how smart he is for knowing what a boat is called. Then I decided to mess with him a bit, I just couldn't resist, as is often the case.

Me: "So, you like those boats?"
Zach: "Yesth"
Me: "Do you want to take one home?"
Zach eyes widening "YESTH!"
Me: "Do you want to take it home and put it in the bathtub with you tonight?"
Zach: "YESTH!"
Me: "haha do you really think it will fit in your bathtub, bean?"
Zach (bean): "yeah."
Me: "Are you sure?"
Zach: "YESTH, Mommy!"

David and I started laughing a little but Zach kept yelling for the boat as we passed by and then I felt a tiny bit bad for messing with him.

This morning on the way in, in the half-dark morning Zach was doing his usual pointing out of the moon, cars, etc. Then we pass Stokely's again and he said "MOMMY, I want it!" while pointing at the boats. I really did feel bad then.