Vendor comes in to look through our drawings. After flipping a couple of pages he announces,
"Looks like I'm gonna get lucky on the first try!"
to which I reply (with a completely strait face),
"We should all be so fortunate."
then I turned around and tried to go back to work, but ended up instead rushing over to my desk where I TRIED not to laugh too loud but ended up sounding like I was crying instead. Actually, the poor vendor thought I was sobbing until I gave a good cackle and bossman had to tell him I'd completely lost it.