Legitimately;
me: "So thats your account set up; you should recieve your first few emails within 72 hours"
Them: "and how longs that"
Me: "well...72 hours."
Them: "Oh right...and what if emails come sooner than that?"
Me: "Well...that can only be a good thing I assume..."
Them: "...Okay."
*About a day later I recieve an email off them*
Them: "Hi *Name* my emails up and working...and its a good thing too! imagine if it hadnt worked! i'd be very angry about now!
"
Me: [Internally] ...Eh?...what on earth are you talking about?...go away you mad mad person... [\Internally]
[In the email]...good to hear...any troubles let us know...[/in the email]