Itsy Bitsy

I’ve spent the last ten years trying to breed itsy and bitsy spiders together to make an itsy bitsy spider.
The problem is that itsy spiders don’t want to breed with bitsy ones, and bitsy spiders will have nothing to do with the itsy ones.
I’d use artificial insemination, but have you ever tried to artificially inseminate a spider?
You have?
Well, dang! You know how hard it is.
Imagine how hard it is when their bits are itsy!
Teeny-weeny… literally!
Once, I thought I had an itsy-bitsy spider, but down came the rain, and…
Well, you know the rest.