Blonde joke for the day

Rico says his mother (formerly blonde herself) forwards this one:

A bartender is sitting behind the bar on a typical day, when the door bursts open and in come four exuberant blondes. They come up to th bar, order five bottles of champagne and ten glasses, then take their order over and sit down at a large table. The corks are popped, the glasses are filled and  they  begin toasting and chanting: "51 days, 51 days, 51 days!" Soon, three more blondes arrive, take up their drinks and the  chanting grows. "51 days, 51 days, 51 days!" Two more blondes show up and soon  their voices are joined in raising the roof. "51 days, 51 days, 51 days!" Finally, the tenth blonde comes in with a picture under her arm. She walks over to the table, sets the picture in the middle and the table  erupts. Up jumps the rest, and they begin dancing around the table, exchanging  high-fives, all the while chanting: "51 days, 51 days, 51 days!"  he bartender can't contain his curiosity any longer, so he walks over to the table. There in the center is a beautifully framed child's puzzle of the Cookie Monster. When the frenzy dies down a little bit, the  bartender asks one of the blondes: "What's all the chanting and celebration about?
The blonde who brought in the picture pipes up: "Everyone thinks that blondes are dumb, and they make fun of us. So, we decided to set the record straight. Ten of us got together, bought that puzzle, and put it together. The side of the box said 2-to-four-4 years, but we put it together in only 51 days!"