An old one - but is quite a good one

A woman went to her boy friend's parent's house for
Christmas Dinner.
This was her first time meeting the family and she was very nervous.

They all sat down and began eating a fine meal.
The woman began to feel a little discomfort.

Thanks to her nervousness and the broccoli casserole.
The gas pains were almost making her eyes water.
Left with no other choice, she decided to relieve herself a bit and
let out a dainty trump.
It wasn't loud, but everyone at the table heard the poof.

Before she even had a chance to be embarrassed,
her boy-friend's father looked over at the dog that had been snoozing
under the woman's chair, and said in a rather stern voice, Skippy!"

The woman thought, this is great and a big smile came
across her face.
A couple of minutes later, she was beginning to feel the pain again.
This time she didn't even hesitate.
She let a much louder and longer "rrriiippp"

The father again looked at the dog and yelled,
"Dammit Skippy!"
Once again the woman smiled and thought, "Yes!"

A few minutes later the woman had to let another one rip.
This time she didn't even think aboutit.
She let rip a fart that rivaled a train whistle blowing.

Once again, the father looked at the dog with disgust and yelled,
"Dammit Skippy, get away from her, before she shits on you!"