Ohhh gosh, I could go on for days about all the embarrasing "fat" moments I've had in my life...here are just a few that stick out in my mind.
Does anyone remember the Jenny Craig commercial with that catchy little jingle "1-800-99-Jenny"? Well when I was in 2nd grade, apparently some of the boys in the class decided it would be funny to corner me at recess and sing "Katie needs to call 1-800-99-Jenny" over and over until someone went and told on them. That was probably one of the most traumatic experiences of my childhood and the first time I ever realized that I was overweight.
At my 8th grade formal in junior high, I remember being very embarrased because while everyone else was slow dancing, I just kinda stood at the edge of the dance floor and watched everyone. It hurt my feelings because I had quite a few guy friends who I was close with that wouldn't even dance with me. I knew it was because I was fat...so yeah, definitely embarrasing.
And finally, I was in the chorus of my high school's musical when I was a senior, and there was a scene where a bunch of us were supposed to be in husband/wife pairs. I was assigned a partner, and we ran through the scene once, and then after that he informed me that he was just going to sit the scene out because he had a costume change. He told other people, however, that he didn't want to be partners with the "fat girl".