Toys "R" Us Night Stockman interview questions

Had to pick out a toy from the store I'd want to buy. Then in the group interview we had to each impersonate a cartoon character and the other interviewees had to guess who we were. Then the interviewers left the room and we paired up and had to get to know another interviewee. When the interviewers returned we had to "sell" the other interviewee to the interviewers and say what experience they had and why they should be hired. However, there was a twist, we had to "sell" the other person pretending we were Billy Mays. Next, we had to "sell" ourselves and say why we were better than any other person in the room and why we should be hired over everyone else. I was the only caucasion person in the room and felt very uncomfortable explaining why I was better than everyone else in the room. Lastly, we had to swap toys and read the box and "sell" the toy to the group. This was the strangest and most uncomfortable interview I've ever been on. I am very quiet and reserved. I just want a quiet night job where I can stock shelves. Why do I need to talk like Billy Mays?