Three sisters, Fanny, Judy and Sammy walk in to a pub. 
 
 These are not normal sisters, they all have incredibly large feet
 (size 15+ shoes!).
 
 Judy and Sammy sit down while Fanny goes to the bar for drinks.
 While she is gone, two young guys on the pull cruise across with
 the intention of chattin' up the lovely sisters.
 
 They start their routine of chat up lines when one sees their 
 incredibly large feet. He says "Hang about! Look at the size of
 your feet, they're bigger than mine!"
 
 The sisters smile and reply, "Well, if you think they are big, you
 wait 'til you see our Fanny's!