Why limit your artistic hobbies to just acting when you can easily purchase almost anything on eBay?

Appearing on The Tonight Show Starring Jimmy Fallon Friday evening (July 29), Margot Robbie dished on her obsession with amateur tattooing, touting her abilities with a tattoo gun (which she bought on eBay, apparently) and revealing that she often enjoys tatting up her pals.

The Suicide Squad star, who plays iconic Batman villain Harley Quinn in the DC film, told Fallon that she frequently gives tattoos to her friends, including co-star Cara Delevingne, who plays Enchantress in the movie.

"We did toe-mojis," Robbie said, explaining that she tattooed the bottom of Delevingne's foot while dressed in character as Harley — and allowed the model to do the same to her in return.

She also admitted that while she purchased her tattoo gun online, she's not licensed and never had any formal training in the artistry.

"You know what...I don't know what the rules are, but you can buy a tattoo gun on eBay," the actress told a somewhat stunned Fallon, adding that she's "actually done almost 50 tattoos now" and even once asked her friends to allow her to ink them up for her birthday.

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