Things That...

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
Passive-aggressive disorder
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