I yell "Hello!" at the top of my voice and wave energetically, whilst still continuing to bounce.
My neighbour crosses the street and talks to me over the hedge and through the trampoline netting. The conversation goes like this:
"Hello, I'm S."
"Hello, I'm Debi."
"Yes, I know, I've read your website, so I wasn't at all surprised when the trampoline arrived and I knew it wasn't because you had tons of kids!"
I was deeply amused!