Do not step on the ducks

Three women die together in an accident and went to heaven. When they got there they were met by St. Peter who said:
-We only have one rule here in heaven ... do not step on the ducks.
So they went into the sky, and sure enough, there were ducks everywhere. It is almost impossible not to step on a duck, and though they did their very best to avoid them accidentally the first woman accidentally step on one. St. Peter will come to her with the ugliest man she ever saw. St. Peter chains fixed the man at her side and says:
-Your sentence because you stepped on a duck is to spend eternity chained to this ugly man!
The next day happened to be the second woman to step on a duck and instantly came St. Peter, who did not miss anything, and with it, he had an extremely ugly man. He chains them together with the same explanation as to the first woman.
The third woman has observed all this and is, because she did not want to be chained in eternity with an ugly man, very, VERY careful where she puts her feet.
She manages to go months without stepping on a single duck, but one day, St. Peter up to her with the best-looking man she ever saw. Long, long eyelashes, muscular and slim.
St. Peter chains them together without saying a Word. the woman says it all:
-I wonder what I have done to deserve being chained with you for all eternity?
The guy replies:-I do not know how it is with you, but I stepped on a duck! "