The Dutch are known for various things; weed, Heineken, the red-light district but also that they complain a lot; at least that is what we experience, ourselves.
We all know this guy who is complaining all-the-effing-time. Sometimes he's called Joe, sometimes he's called James and sometimes he's called Joost - and so is ours.
Do keep in mind that this guy, most probably, does not have anything to do with Joost.
Joost: It's raining all day already, the sun is not bright enough and workload is too high!
Colleague: Stop complaining.
Joost: And wait until it's next week, then we don't have any thing to do for project X anything anymore - and the customer doesn't even bother...!!
...
Another colleague walks in and says: Oh boy, is he Joosting again?
A game involving the classic Easter candy, Marshmallow Peeps. Each Peep has a toothpick sticking out of the front of it, like a lance. Two Peeps, so armed, are placed in a microwave facing each other. As they are heated, they expand, until one Peep's toothpick makes contact with the other, causing the unfortunate bugger to pop.
When two people take a mattress off a bed(usually in a dorm hallway),hold it in front of them holding it by the sides or the back and get a big distance between them. Then, they run and charge into each other and whoever stays standing is the winner.A commonly known late-night college activity.