When my oldest was 3 or so my mom tried her hand at potty training him. She taught him to say all the big words. Like Bowel Movement. Yeah. It struck something with him. So we are at mom's and she is so proud. He is in the bathroom with the door open. He's yelling, "One. Two. Three. BA-BOOM!!!!!!" (repeats) So he comes out of that bathroom and I say, "What were you doing?" He innocently says, "I was having a BOMB Movement." What ever works.