An elderly man is on a train and sitting opposite him across the aisle is a young gal wearing a thigh high miniskirt. As the gal uncrosses her legs, the man can’t help but notice that she isn’t wearing any panties. The gal sees him staring and says “Are you looking at my pussy?” Embarrassed, the man says “I’m sorry, it won’t happen again.”  
“It’s OK.” replies the gal, “I know it looks cute but I can also make it do tricks. Look, I’ll blow you a kiss.” The man watches her vagina do a puckering movement and is thoroughly impressed.
“Look, I can make it wink” she says, and the man is surprised and even more impressed.
The gal looks at the man and says “I’ve been teasing you and you are such a good sport. Come over and sit next to me.” The man does so and the gal playfully says “You’ve seen my pussy. Would you like to put a couple of fingers in it?”
“My God,” exclaimed the man “you can make it whistle too?”