Someone or something that is generally useless or pointless.

Thon apprentice af yours is about as much use as a back pocket in a shirt.

shes a promisuous young lady who enjoys the penis
saying to someone that they dont know who there father is
saying a bird is that ugly you wouldnt even let your mate buck her
f**k off
a poorly cleaned backside

When, after a night of extreme insobriety, your insides feel reduced to pulp and you feel like you are about to die.

 "Aw Jesus, I feel like shit beaten up in a bucket."