12. Wasps
Yup, the international terrorists of the insect world are one of the main reasons your beautiful summers afternoon with the BBQ, the better half and all of the lager turns into a war of attrition, fear and madness. These spiteful little sods have basically evolved into flying uber-bastards that exist to do nothing but make women scream and run while doing their level best to not spill their drink, and to force men into questioning their masculinity such is the childlike panic and latent terror that these venomous little buggers induce. The UK is incredibly lucky to have a climate in which it doesnt foster killer insects yet we squeal like a burning tree and demolish the entire picnic area the minute a wasp lands on a bit of melon.