"Tall Stories" by Tom Holt

Expecting someone taller
All he did was run over a badger - sad, but hardly catastrofic. But it just wasn't Malcolm Fisher's day. The badger turned out to be none other than Ingolf, last of the Giants. With his dying breath, he reluctantly handed Malcolm two Gifts of Power, and made him ruler of the world. Funnily enought, that made a lot of other Earth - dwelers rather unhappy ...

Ye Gods!
Being a Hero bothers Jason Derry. It's easy to get maladjusted wen your mum is a suburban housewife and your dad's the Supreme Being. It can be a real drag slaying fabulous dragons and retrieving golden fleeces from fire - spitting dragons, and then having to tidy your room before your mum' ll let yo watch Star Trek. But it's not the relentless tedium of imperisable glory that finally brings Jason to the end of his rope; it's something so funny that it's got to be taken seriously. Deadly seriously ...