You know the saying tit for tat? Well a titter is some one who always takes from you but when it comes time for them to pay you back they are cheap, lazy, ingore you, pay you back with less. They are titters. The have no concept of I help you out-you help me out. They are normally jerks and think they are worth more then anyone. Users are titters.
I made a web page for his company for free so that when I needed work done I would have a credit but now he will not return my calls. He is a titter.
I gave my brother a new guitar I was selling and told him that when I had to do yard work he would help me but he showed up worked an hour then left to never return. He is a titter.