Lifeguard salesman?

My buddy applied for a job an insurance salesperson. Where the form requested "Prior experiance," he wrote "lifeguard." That was it, nothing else.
" We're looking for someone who can not only sell insurance, but who can sell himself," said the hiring manager. "How does working as a lifeguard pertain to a salesmanship?"
"I couldn't swim," my pal replied.
He got the job.

-Tedd C. Huston