THINGS THAT ARE DIFFICULT TO SAY WHEN YOU'RE DRUNK:

Indubitably
Innovative
Preliminary
Proliferation
Cinnamon

THINGS THAT ARE VERY DIFFICULT TO SAY WHEN YOU'RE DRUNK:

Specificity
British Constitution
Loquacious Transubstantiate

THINGS THAT ARE DOWNRIGHT IMPOSSIBLE TO SAY WHEN YOU'RE DRUNK:

Thanks, but I don't want to have sex.
Nope, no more booze for me.
Sorry, but you're not really my type.
Good evening officer, isn't it lovely out tonight.
Oh, I just couldn't....No one wants to hear me sing

(if you guys feel this belongs in the jokes section, feel free to move it, i couldnt decide)