I have twice, both as hourly summer jobs, wasnt like I was risking my career.
First time was in high school at a ice cream/ hamburger restaurant where i was a busboy. the asst manager and I were the only ones left after closing. One thing led to another, and before long I was balls deep with her bent over the managers desk.
She wasnt all that attractive, but was a fun summer.
Second time was this summer, when I interned in a marketing department. There was a 25 year old guy in accounting that eyed me everytime I saw him. My last week, he asked me if I wanted to come to his apartment on Saturday for a swim. (Since Friday had been my last day, technically it wasnt a co-worker). when I got to his apartment, he stripped down in front of me to put on his trunks. We never made it to the pool. (we didnt actually fuck, but got some great head).