Tom Holland has revealed he could only wear a G-string underneath his Spiderman costume. Photo: Chuck ZlotnickBeing an actor can be downright humiliating.

Hollywood up-and-comer Tom Holland has dished the dirt on what he had to endure while shooting some ofSpider-Man Homecoming’smost pivotal scenes.

The British actor toldShortListall he was allowed to wear underneath his Spiderman costume was a G-string. After all, the iconic red and blue outfit doesn’t leave much to the imagination.

“They brought them in on my first day, like, ‘Here are your thongs,” he said. “I had serious misgivings – would my arseholeever be the same again? But I had to get used to it. Even though I was thinking, no way, no way!”

But what Holland had to wear underneath the costume wasn’t the most uncomfortable part about the costume – far from it.

For starters, there was the question of how to stay hydrated on set. As fans of the Marvel comics and movies will know, Spiderman’s mask completely covers his mouth.

Despite the discomfort caused by wearing the suit, Holland said it was an honour to wear it. Photo: Sony

A clever crew member eventually figured out how to feed a plastic tube through the mask’s eye socket so an assistant could squeeze water in Holland’s mouth when the studio lights were starting to get too hot.

But, staying hydrated presented a new problem: How to go to the toilet when you’re dressed head to toe in an “unbelievably uncomfortable” piece of art without any visible zips.

Tom Holland in a scene from ‘Spider-Man: Homecoming’. Photo: Chuck Zlotnick

“You have to completely disrobe and then put a dressing gown on … you can’t walk around in just a thong, can you imagine?” Holland said. “And then you race across the lot to the toilet then come back, get into it – it’s such a mission.”

However, the news isn’t all grim, with the 21-year-old pointing out the awkward bathroom adventures were all worth it in the end.

“Any discomfort is immediately outweighed by the privilege of wearing it,” he said.

The pay cheque, and big boost to his career, also wouldn’t have gone astray. To date, theSpidermanfranchise has webbed more than $4 billion at the global Box Office.

Spider-Man Homecominghits cinemas on July 6.