A spuiker is a man/adolescent boy who sleeps with a lot of different women, regardless of marital status. This man is brazen and will have sex anywhere and with any woman (even if he is not attracted to her). A spuiker manne, as they are known, prefer
quantity over quality.
Calling someone a spuiker is generally regarded as a
compliment when in
the company of other spuikers. However, it is derided in all other social circles