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?
dammm you are so bored you search for it in here this is sad...
you better find something better to do.
guy 1:"wow i was so bored i searched for yes in urban dictionary"
guy 2:"yes"
guy1:"did you even listen to me?"
guy 2 :"yes"
agreeing to do something or agreeing to something
person1: yo you want some mcdonald’s
person 2: hell yes