Take a deep breath, and from the bottom of your belly send out a good, strong
“HA! HA! HA!”
Anyone looking at you? Tell them “Betsy made me do it! HA HA HA! She said it’s good for me. Care to join me? HA HA HA!”
All by yourself? Then have fun with this! How about a “HEE HEE HEE!” or a “HAR HAR HAR!”?