A stoomer is defined mainly as an Amazing goal on either Pro evolution soccer where it originated or Fifa where it is now commonly used, whereby the ball is often in the air and is shot from a distance of 30+ yards, normally ending up near the top corner of the goal. In general terms a Stoomer can be identified as a really smelly poo/fart, an alcoholic drink, or a photograph amongst other things.
A danish word for having a nervous stomach. You often have 'stoffermave' before exams or before finals in sports and etc. Translated to english it would be something like "getting butterflies" - but just butterflies on stereoids.
Oh man! Just the thought about playing in the Super Bowl gives me a stoffermave.
I hope my stoffermave won't ruin my exam today - I just need to pass this test.