1. when youve been talking to someone for a while and you run out of things to say, so your conversation ends awkwardly.
2. when someone says something so un-answerable that the conversation cant go on any longer.
both should should be avoided if possible.
1. *after 5 hours*
person 1: thats gay
person 2: i know
person 1: yeah
2. person 1: guess what?
person 2: what?
person 1: i had dirty sex with a prostitute last night, and now i have aids.