This is when you dont want to talk to someone you say yes.
NIck: Adrian told such a good joke
Charlie: Yes
Sometimes things are not clear. But, you want it. Even if you don't know what it is. Or, you want it but you don't. Most of the times you will say "yes?". It is simply the right thing to say in every situation.
Friend: Blah Blah Blah... So how about it? I'll bring you the money tomorrow.
You: yes?
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....isufybszkum.sdcuygis c blah aoiuabcisc vm blah uvu skK donuts gv jkzh b vjh dfpencilsiuvfh. Agree to terms and services?
You: yes?