Things that are difficult to say when you're drunk
Innovative
Preliminary
Proliferation

Things that are VERY difficult to say when you're drunk . .
Specificity
British Constitution
Transubstantiate

Things that are COMPLETELY IMPOSSIBLE to say when you're drunk .
Thanks for the offer, but I don't want to come back to your place.

Nope, no more beer for me, I've had enough.

Sorry, but you're not really my type.

No kebab for me, thank you.

Good evening officer, isn't it lovely out tonight?

I'm not interested in fighting you.

Oh, I just couldn't - no one wants to hear me sing.

I won't make any attempt to dance, I have no co-ordination.

I must be going home now as I have work in the morning.

I must get to my bed as I could never have a really good sleep in that hedge / pavement / skip.

I really believe in staying sober

I honestly don't think the rest of the city centre wants to see my bare bum.

No..you are not my bestest mate in the whole world. I've only known you for a few hours.

I'm sure my feet would be damaged for life if I take my shoes off and walk all the way home.

Me? go for a pee in the men's toilet because the ladies queue is too long? I don't think so.

There goes last orders, just make mine's a coke.
Chip shop ? No thanks, I'm on a low fat diet.