“Microbeads and fragments that fish eat typically pass through their bodies and are excreted. But [microplastic] fibres are becoming enmeshed in gastrointestinal tracts of some fish. … There is also a chance that fibres are in drinking water piped from the lakes. … Two dozen varieties of German beer contained microplastics.” (http://www.theguardian.com/environment/2015/jan/09/great-lakes-plastic-microfibre-pollution-us)
A pint of your finest plastener lager, or Lego Brecks, if you please.