You may, like us, have believed that a magnet was a fun thing that you clicked around with on your desk while waiting for your coffee to cool down, but it seems that there are magnets. And then there are magnets. No, we’re not talking about industrial strength versions which can grab a car and hoist it into a crusher, we’re talking tiny domestic products which are scary.

This Neodymium Magnet for example, on sale on Amazon for a mere $40.99, is rated at N50, which apparently means that it exerts a pull force of over 250 lbs. In case you’re wondering what the fuss is all about, you have to understand that this is from a piece of triple layer ‘Nickel-Copper-Nickel’ metal which is just 2 inches x 2 inches x 1 inch. Judging by the reviews on the page, if you get two of these puppies too close to each other (say within 8 inches or so) two things are likely to happen.

First, they will glom together faster and more firmly than Liberace with his candlesticks (i.e. you will find it almost impossible to separate them), and second, they may take a chunk of your finger with them as they do the deed. Rather like high powered lasers or ultra hot chilly peppers, these items should definitely be treated with the utmost respect. And for goodness sake stay away from memory cards, cell phones, hard drives, laptops and anything else electronic when carrying one of these.

In fact step into a plastic bubble and remain there until you’re happy you know what you’re doing. And as for sticking the thing to your fridge as a paper holder? Yeah, well good luck with that. Priced at $40.99 (cheaper versions with less magnetic force available).