1. An insult received when one is being a douchebag or has been caught confabulating.
2. the flattened shape natural male or female breasts make when their owner is lying on their back
"You've been cheating on me this whole time...you lying tit!"
"Wow, I was a double D but now that I'm lying down, I'm like an A minus!"
"No worries, that's just your lying tits"