(Other than liquid in NE France above)
Mostly in France but a few times in Belgium I have had a lot of shouts but all positive - I'm riding a tadpole recumbent and from talking to other French recumbent riders reasons I got was people like it that you're "doing something different". One time riding on French canal towpath and tourist boat on canal with 30 people aboard passed and they all started clapping me (as in cheering clapping). Not uncommon getting a few beeps on horn and thumbs up hand stuck out of window. And all ages as once passing a group of school children walking on pavement being herded by teachers and many started clapping as I passed.
Mostly in France but a few times in Belgium I have had a lot of shouts but all positive - I'm riding a tadpole recumbent and from talking to other French recumbent riders reasons I got was people like it that you're "doing something different". One time riding on French canal towpath and tourist boat on canal with 30 people aboard passed and they all started clapping me (as in cheering clapping). Not uncommon getting a few beeps on horn and thumbs up hand stuck out of window. And all ages as once passing a group of school children walking on pavement being herded by teachers and many started clapping as I passed.