Coming up with song titles

Anyone else find this a nightmare? I find it particularly difficult as I write entirely instrumental music so there are no lyrics to draw from. And I feel like I have to think carefully about it as my experience has been that the title totally influences how people interpret the music. Any techniques/anecdotes/etc?

I get a lot from dreams. Another source is misheard or misread phrases. Also, where I work, they have TVs with subtitles on in the canteens, and the subtitles are invariably wrong and often insane, picked up a lot of potential song titles from there.