Must-see videos of the week: April 20-26

This week's must-see videos feature cats both wild and tame, an epic arm-wrestle between teacher and student, and a death-defying stunt to promote a blockbuster movie. But first, check out this bizarre creation dedicated to the upcoming World Cup in Brazil.

What has two wheels, 73 soccer balls and a replica of Rio's Christ the Redeemer statue? A bike created by Didi Senft. The eccentric German designer built the massive bike in honour of this summer's World Cup. And guess what? It actually works:

Ken E. Nwadike says he failed to qualify for this year's Boston Marathon by just 23 seconds. Still, that didn't stop him from making his mark on the iconic race:

[ Last week's must-see videos: Penguin-dance craze sweeps Saudi Arabia ]

What happens when a leopard gets loose in an Indian village? Mass chaos. Thankfully, it doesn't appear anyone was seriously hurt in the melee:

If you doubt the existence of "old-man strength," then watch this 70-year-old teacher arm-wrestle one of his students:

Want a cuddly companion with your morning coffee? If so, then check out this cat café in New York City. But hurry up — it's only open for a limited time:

Let's end this week's installment with an impress feat in promotion of The Amazing Spider-Man 2. The real-life Spider-Man, a 52-year-old Frenchman, scaled a 33-storey hotel in Macau in just over 30 minutes:

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