A pussy that has been bored out so long and hard over the years that it more resembles a humid, moist cave than a vagina. This kind of vagina has the interesting property that it will give you both a boner as well as nightmares.
The act of laugh so hard you wheeze or cough during the laugh resulting in you falling or sliding to the ground continuously wheezing which makes you laugh/wheeze more.
Alex, and the boys were playing games and suddenly Alex started thorting when he was trying to tell his joke.
