This in not a BINGO game. Grandma went to a Bridal Shower for one of her... mature friends. Someone hired a male dancer. And grandma, always being the life of the party, unbelievably blows off the male stripper, to the delight of the other mature attendees.
(I can hear the woman in the light blue shirt now- "AAAhhhhyyyyy!! MARGRET!!!! Oh MY GOD, she sucked his cock! HHHAHAHAHHA"!!!