A bigwig for the Teamsters was in Vegas for a convention.  Afterwards he decided to get laid.  He walked into a whorehouse and asked the madam if this house was unionized.  "No its not." She responds.  "Well what percentage of the fee do the girls get?" he asks.  The madam responds that the house gets %60 and the girls get %40.  The bigwig finds this unacceptable so he leaves to find a union house.  The next whorehouse he goes into he asks the same question.  "Yes it is!" the madam responds,  "The house gets %30 and the girls %70."  "That's more like it!" he says and eyes the room full of women.  "I'll take that beautiful redhead right there." he says.  The madam responds, "I'm sure you would like to but Big Bertha over there has seniority!"