How do the Amsterdammers enjoy nice weather?

From my observations in last three holiday days, if you are an Amsterdammer and notice that the weather is nice outside:
1- Grab a cloth, grab your partner & kids etc. if any.
2- Hurry to one of the parks neearby. Among most popular ones are Oosterpark and Vondelpark.
3- Put the cloth on grasses,
4- take off most of your clothes & kids' clothes etc ..
5- Lie on the cloth against sun.
An alternative is; to jump into a boat of yours or friends' (i guess), with the 4th remark above being valid..