I find it is better to confuse people. I tell them I trade index futures. Very few people know what it is. No questions. People who know me assume I am retired because I spend all day at home. That is ok with me.
Yeah, I'm an extra virgin olive oil trader for merry lunch, that should go down well...(pun intended)
If your a good trader tell your friends you work in Accounts Receivable. If your a bad trader then tell them your in Accounts Payable.