Ergonomics & Innuendos

After yesterday's last lesson which was on Ergonomics* the kids were asked to design a hand held device in the shape of a pen/toothbrush. And I came across a couple of classic examples of "handheld devices" on one of the work piles this morning. Naturally I couldn't stop laughing and had to photograph them.
I did have trouble reading one of the words which was helped by my work colleague K: word in top left hand corner reads"strings". Well I p!ssed myself even more!

* for those who are not familliar with this word, it is used a lot when designing a product. Hence, an ergonomically designed product is one that fits well to the human body (in the above case, the hand)!