‘hello tanya I’m mr . sad’

one of the product drivers at work, s, no front teeth and 10 children, always calls me before he takes the product to our customers to check that its in spec first. the conversation usually goes like this

s:‘hi tanya is it in spec?’
t: (looking at the results)
s: you know what happens if its not right?’
t: ‘what?’
s: ‘I’ll have to send mr sad over to visit you’
t: ‘ oh yes yes thats right mr sad, no it’s fine take it’

I really don’t know who mr sad is but he fuckn scares the shit out of me