Happened a while ago but I still find it funny.

*phone rings*
Me: good morning sir, how can I help you?
Client: MY WEBSITE IS OFFLINE, FIX IT RIGHT NOW.
M: I'm going to take a look, what's the domain?
C: *gives domain*
M: I see, that domain expired already, it was cancelled through our customer portal by the client, you maybe or someone you know?
C: WHAT?! MY INTERNATIONAL BUSINESS DEPENDS ON THAT DOMAIN, I'D NEVER CANCEL IT, THIS IS BULLSHIT! I'F THE SITE GOES OFFLINE FOR A MONTH I'LL FUCKING GO BANKRUPT, YOU'RE GOING TO FIX THIS RIGHT NOW.
M: if I may ask, how is your business doing right now?
C: HOW IS THAT QUESTION RELEVANT RIGHT NOW?!
M: well, you said that if the site would go offline for a month, you'd go bankrupt. The domain registration ended about half a year ago so that's why I aske......

*beeeeep beeeeep beeeeep*

Well, okay then.

Look what I got!
I don't know what do to with it, except for work related stuff.

Today at work, still laugh thinking back to it!

We were on lunch break but the linux support engineers who are on the phones as well have to pick up calls anyways (very small team).

*engineer walks to the table, sits down: Ahhh rest, finally!*
*tringggggggggg*
*engineer pulls a face like 'oh for fucks sake' and walks back to his desk*
*puts headphones on and clicks the answer button just as it disappears*
"really!?! Alright lets finally eat now"
*sits for literally one second*
*tringgggggggggg*
*Engineer seems quite pissed off now. walks to his desk again, puts on headset, clicks the answer button JUST as the call stops again*
"Mother of god, fucking really?"
*stays as his desk for a minute or so, walks back, stays hovering above his chair for a little and finally sits down again*
"Finall......"
*TRINGGGGGGGGGGGG*
"MOTHERFUCKER. THESE GUYS TIME IT OR SOMETHING!?!?"
*walks back to his desk very frustrated this time*
*puts on headphones very quickly and presses the answer button*
*answer works but the call is literally dropped the second he starts it (it was a real client)*

"OH FOR FUCKS FUCKING FUCKING FUCKING SAKE FUUUUUUUUUUUUUUUUUUUUUUCK"

*walks back to table again and sits down. Takes sandwich and....*

*TRINGGGGGGGGGG MOTHERFUCKER*

"FUCKING COCKSUKING MOTHERFUCKING PIECES OF WHAT THE FUCKING FUCK EVER"

*gives a deadly look to another engineer: "I am NOT going to take it this time! En-fucking-joy."*

We laughed so hard xD