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(Image: PHOTOSHOT/OTITHELIS.COM)

But if you thought the allegations about the PM were shocking, you don't know the half of it.

We trawled the world for the weirdest, sickest initiations and rituals.

Mr Cameron would surely opt for the pig in a heartbeat if it meant avoiding any of these.

VOMIT-SWAPPING

Swansea University students keen on playing a bit of football might want to think again.

New players are pitted against each other in a "wine-downing, vomit-swapping, arm-wrestling, fart-sucking face-off".

After downing a can of beer and bottle of wine, each player must throw up in a bucket, swap them, and then drink the other's vomit.

As if that was not enough, they must then arm-wrestle and the disgusting ordeal is not over for the loser.

They are then compelled to "suck a fart out of the other's arse".

(Image: EXPRESS)

All initiation ceremonies are now banned by the student's union, although rumours are that some initiations live on.

However, if you're browsing a fresher's fair in south Wales this week it might be wise to pop the question before signing up...

STING-DANCING

Deep in the Brazilian Amazon is the Satere-Mawe tribe.

There, young boys have to wear gloves made of bullet ants and dance for 10 minutes without flinching.

The catch is that bullet ants have the most painful sting of any insect, causing paralysis and throbbing pain for up to 24 hours.

LION-SPEARING

The slaying of Cecil the lion in Zimbabwe sparked international outcry and forced his killer Dr Walter Palmer into hiding in the US.

(Image: AP)

The Masai tribe in Tanzania and Kenya does not afford its young the luxury of a gun. Just a spear.

To become a warrior, they must stalk and kill a lion, after being circumcised.

Governments now ban the hunting, making the danger-laded ritual laced with the risk of both jail and death-by-lion.

DEATH PLUNGE

There are many things good about life in Vanuatu. The relaxed south Pacific island lifestyle, the tropical climate.

But becoming a man is far from tranquil.

Youngsters must perform the Naghol ritual. The land dive, or bungee jump, is done using vines rather than elastic cords, with the aim of coming as close to death as possible.

Jumpers try to shave their heads on the ground.

If they avoid death they successfully become men.

If the jump is overcooked, sadly the quest for manhood will forever elude them.

(Image: WIKI)

FORESKIN-EATING

The mardudjara Australian aborigine tribe's young live their lives trembling in anticipation of the horror ordeal awaiting them when they come of age.

When the day comes, elders leads the youngster to a secluded place. While one sits on his chest another CHOPS off his foreskin.

After enduring that without anaesthetic, the boy must then EAT his own foreskin without chewing.

He then is led to a fire where the underside of his penis is cut down to the scrotum, before he must stand, bleeding, over the blaze.

Then manhood is reached. Although how much manhood the poor boy has left is in doubt...

SEMEN-SWALLOWING

Worst of all, though, can be found in Papua New Guinea.

At the age of seven, the Sambia people take boys from their mothers arms and house them in huts for TEN years with other males.

There they force vomiting, defecate using sugar cane and give each other nosebleeds to purge themselves of impunities.

More sinisterly still, they ingest SEMEN.

This is to complete the transition from gay to straight.

The Sambia believe boys lack the substance needed for the muscle and toughness of adulthood.

That substance, jurungdu, is contained in semen.

Therefore they must receive enough of it during puberty to enable them to become semen donors when they come of age.

Weird or what?

Certainly a tougher initiation than getting up, close and personal with a dead pig...