There is no better source of inspiration than a slurred speech given by someone who’s too drunk to stand, much less speak coherently.
Oh wait, did I say no better? I meant no worse, as in demotivational and truly sad, especially knowing they won’t remember a word of their drunken speech when they wake up the next day.
The only thing inspirational about a really drunk person is the natural way they inspire others not to drink so much, lest they turn out looking like a drunken fool as well.
And that's why drunks make terrible motivational speakers, well, that and it's really hard to understand what they're trying to say.