A bit like saying 'given the choice would you rather have your kneecaps bust open with a hammer or your fingers cut off by a pair of garden shears - rusty ones.
A bit like asking yer mam "what's for tea?" and the reply being "you've got a choice, broken glass or yer dads razor".
Or if someone was holding a gun to your Dads head would you shag your Mum to save your Dad? Or did I just take it too far?