I'm with ya! When Cody first wobbled on a lifted leg, I was happy/sad..growing up but too fast! Luckily, he often changed his method and sometimes didn't do liftie. So then happiness turned into embarassment!
At the dog park, Klo will lift her leg to pee on a tree after the "boys" are done!!

Congratulations on puppy school! It sure helps, doesn't it (they trained me). Surely Reilly will gradulate with flying colors!