I suppose for me it would be the simple word that I use too much, but is such a handy word for all sorts of uses, cover your eyes and ears if you are of a nervous disposition it is B*ll*cks.
Some examples of different uses:
B*ll*cks! I forgot the keys
Look at him he thinks he's the dog's B*ll*cks
Look at all those misses in the paintwork, you made a B*ll*cks of that.
No wonder his eyes are watering he just got kicked in the B*ll*cks.
You won't get me up in one of those things, B*ll*cks to that.
He's just had a b*ll*king from his missus.
Someone tells you to do something you will not do and you say ......
or just a plan and simple
B*ll*cks!!
after, for example, spilling the tea, striking your thumb with a hammer or getting a speeding fine through the post.