This may be old but funny nevertheless. 
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
Cogito ergo sum
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
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!
Credits to Torgoth who e-mailed this.

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
Cogito ergo sum
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
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!
Credits to Torgoth who e-mailed this.