We got cousins

Last November, Carter and Calvin had one cousin, Derek & Lisa's son Peter, who was approaching two and who we haven't seen nearly often enough. Since then, they've quadrupled their complement of cousins, with the additions of Peter's sister Ashley in November, Michelle & Josh's son William in March, and Cathy & Roberto's son Victor in May. We had a heckuva time explaining this to the boys, the exchange last fall going something like this.

Dad: Boys, how many cousins do you have?
Boys: One, Peter!
D: Right, so how many cousins all together?
B: One!
D: No, three.
B: (stunned)
D: Peter, Carter, and Calvin are cousins, that's three.
B: But we're brothers, not cousins!
D: Right, but you're Peter's cousin.
B: Oh.
D: And how many cousins will you have soon?
B: (counting on fingers) Two? Five? Twelve?
D: Uh, four.
B: Oh, right, Peter, Carter, Calvin, and Victor.
D: Uh, what about Ashley & William. (Note: we didn't know their names yet, but play along.)
B: (triumphant) So we'll have six cousins!
D: Well, close, you'll have four cousins, but there will be six cousins all together!
B: Why can't we have six cousins???
D: Because you're brothers. None of your cousins have six cousins either, it's just that there are six of you all together!
B: Can we have six cousins? We want six cousins!
D: It's a lot more likely than you getting more brothers.

Anyway, check out some pictures of the cousins, with parental appendages.