Poop And Piss

Verbally, Gio is coming right along. He is up to at least 5 words now and making complete sentences as of yesterday. A lot of words don't come out exactly right which is typical for his age. I've noticed he has been working on the tenses of some words. Some have changed and are now correct or closer to correct. He went from signing drink to saying nut and now nuk. He had completely stopped using sign but is now signing finished along with saying it. The two words that come out like "naughty" words are poop aka scoop and piss aka kiss. He has named his favorite toy two scoops aka two poops. He likes it when I chase him around the house and give him a kiss when I catch him. So to initiate this he says "Piss me?"