Our daughter Indra said something really funny when she was 4 years old.
We were at the sea in Ostend. In ostend, there are several "wave-breaker", which brake the incoming waves. People can walk on these, so my husband does this often. I don't because it can be rather slippery!

One day my husband said: let's go walking on the beach today!
Little Indra said: "Oh yeah daddy, and please, Id love to walk on the "micro-wave"!!!
This was in Dutch of course, but it sounds similar: golfbreker(wavebreaker)- microgolf(microwave)