Am I using developmental delays as an excuse? Hmmm. I've known of little boys with Down syndrome that still aren't potty trained by age 4 so I've just been singing the old "he'll let us know when he's ready" song (my mom thought we should start training at his 1st birthday!). Yesterday he removed his poopy diaper while his dad and I were in the other room having a tickle fight. Think that's a sign or just the record 100+ degree heat?