I know "though" can be used as an adverb in a sentence, especially in spoken English. I was taught to use "though" when the context includes some sort of contrast or conflicting ideas.
However, I hear the native use the adverb in the sentences which barely carries with it any sort of conflict. For instance,
I got a date tomorrow though.
Is there any latent or hidden conflicting idea that I'm failing to get?
Is it a self-depreciating statement? That's the only contrast I can think of.