Potty Training... The Early Stages

Landen has started to want to "go potty" in the toilet. We have not yet successfully had that happen yet. I was about to fall over laughing tonight though when he wanted to go potty in the toilet just before he got in the tub. He is standing there buck naked on the step stool in front of the toilet looking down into the water. He stood there for a few minutes with nothing happening so I asked him to try and squeeze some pee out. He promptly bends his knees slightly, puts a hand on the outside of each thigh, grits his teeth and squeezes his thighs together as hard as he could! Nothing happened. He was trying with all of his might and no matter how hard he squished those thighs, no pee came out. He finally gave up and got in the tub. I wanted to take a picture so bad but it didn't seem too appropriate.