1. Sitting down to have a No. 2 before noticing that there is no loo paper.
2. The plastic packaging inside Weetabix boxes that just won't open without tearing and shooting Weetabix crumbs all over the place.
3. Sticky labels that can't be removed without being picked off one tiny piece at a time.
4. ATMs with no cash available.
5. Spilling something down an item of clothing you've only just washed and ironed.