The "erectus trouserous" or otherwise commonly referred to as "trouser snake" is the worlds MOST dangerous snake. It is fang less, the average length is 5-6 inches, although some are said to reach 8 inches. Colors vary from pink to black. It usually attacks women in the mouth or lower abdominal area. Its highly venomous spit can cause swelling that lasts about 9 months. Some species area also known to attack men from behind.

A guys penis/dick. Also an actual real snake lol, also known as sneaky little devil.

simply the snake in your pants (penis)

A variation on the ever-popular "Trouser Snake", however the prefix added to insure that there is no doubt to what exactly the person is referring to which is coiled in his pants. That is to say, a penis, especially one of considerable length, doubly so if it's snake-like, and almost most certainly if the possesor of said wang must tuck it in his sock or coil it up. See also- Trouser Snake

An elusive animal that comes in many shapes and sizes. The rare hooded trouser snake is more aware of its environment, but this snake likes to collect cheesy matter and keep it in its hood. Each snake carries a venom sack that produces a white venom when it reaches maturity. The snake's one eye also functions as its mouth and waste removal system. The snake does not like cold weather and will shrink in cold conditions. It thrives in warm conditions, such as the many burrows it spits into in order to mark its territory. When touched, the snake will swell up to twice its original size in order to frighten off predators.

british slang word for sex.
the british can be a bit on the mad side.

when a guy wraps a fruit roll up around his trouser snake for the delight and enjoyment of his partner who proceeds to skining the snake's body/fruity skin using only her mouth and teeth