Is this a funny/ good costume idea?

SO I was thinking of gonig as Senator Palins prego daughter. The only issue is that I am going to be a waitress in it and dont want to offend all my customers. I would be wearing hockey jersey with " alakan Mavericks" on the front with a big moose and then on the back my # would be 69 with a palin above it. I was also thinking of putting sponsors like the gun ocation, mothers against teen pregos and stuff like that. I would then have my hair in pigtails and have a big prego belly. DO You think that crosses a line or would people just think its funny?