Great story, but do you really mean you got your annual salary per HOUR? Perhaps you meant per month? Still awesome, of course, but within the realm of reason :-)
There are about 2000 work hours in a year, give or take, so I'm assuming he said something like "55" meaning $55,000/yr but the CEO heard $55/hr which would be more like $110,000/yr.
My interpretation is, for example, he asked for "fifty-five" meaning "$55,000/year". They instead interpreted it as "$55/hour" which would work out to around $110,000/year assuming a standard 2,000 hours worked a year.
Looks like MrFoof and erlanger posted at the same moment so I'll reply to myself. Your explanation makes complete sense. Thanks!
It would be interesting to use this in reverse: claim that you meant hourly rate when discussing salary. "Oh, you thought I meant $100k? No, no, I make $100 per hour now so double that for the salary level I'm at."