Tom Thumb

verb. The action of placing one's thumb as far up another individuals rectum as possible. Often results in extreme surprise and discomfort for the individual on the receiving end of the thumb, and great pleasure for the attacker. In some variations, once the thumb is firmly placed inside the anal cavity, the attacker will go even further by quickly moving his thumb around in a circular motion inside the poop shoot(Tom Thumb Twister). Many prefer to lick their thumbs on the pre-insertion approach to make the execution of the Tom Thumb go more smoothly. However, it's not advisable to lick one's thumb post-insertion.

synonyms: thumb gunnin, checking the oil, slight of thumb
also see: anal rape

1. the title of the first fairy tale ever printed in english, and the name of its protagonist.

2. the name given to tiny, loud firecrackers

3. not a nice thing to call a midget

The act of pressing one's thumb (or finger) into the rectum of a woman while engaged in vaginal intercourse from the doggystyle or reverse cowgirl position.
Hint: A tom thumb should never be attempted on a male without his expressed permission.

A convenience store.

rum, in Cockney rhyming slang

This was a dildo that was sold in the 1980's. They had it for sale in the back of porn magazine's. It appeared to be life like with the exception of its size. It was about 12 inches long with a set of balls attached.