Illustrator Lumps injects a mouthful of grinning teeth into his quirky, grotesque drawings

From classic paintings that undergo a disturbing makeover (Mona Lisa is now definitely grinning) to the addition of disturbing teeth on everyday objects such as cigarette packets, stereos and alarm clocks. There's even a piece of sushi that has sprung to life, with a huge gaping mouth revealing a dash of wasabi on the character's uvula. Gross.

But why the smiling theme? "For some reason, the smile has always been there," says Sam. "I was in my girlfriend's flat last summer and decided to draw the weirdest character I could, it turned out with the smile and I really liked it.

"Usually, I will look at objects or designs around me and give them emotions or turn them into characters, other times I will just start drawing shapes and see where it goes."

Sam studied Industrial Design at Loughborough University but didn't enjoy it, so after graduation he went freelance and opted for a career in illustration instead. So far, he's been commissioned to create web designs and branding for a range of clients, and has started to make a name for himself on Instagram. Discover more of his work via his online portfolio.