This happened a while ago but I till remember it. I'm an Intern within a nice company where everything is open (one big ass room):

Designer: bob
Salesman: peter
(Random names)

Bob: Hey peter, these PDF files you got from the client are corrupt, could you ask him for good versions?
Peter: [on the phone with PDF client coincidentally] Sir, the pdf's you send are corrupt according to our designer.
.............…….............................................
He says that it must be you using a weird operating system.
Bob: Hey dude (me), could you check?
Me: Sure (checked on my Linux, corrupt indeed), yup deffo corrupt or something.
Peter: [on phone] Sir, they really seem to be corrupt. [Talking on phone] He says it must be your operating systems, can it be that your systems are fucking this up?
Me and bob: Highly unlikely!
Peter to client: Dear sir, I've got two very competent professionals here who say you are not right and the document is simply corrupt and I'm definitely going to trust them on this one so may I kindly request a new version!

He is a great salesman!