Pretty silly to ask. I’ve shown my kids to do arm pump when they see trucks. The smile is infectious. I do it when i drive by in my 4 wheels. It’s swing and miss unfortunately. Since i see them on phones etc. me driving i rarely get to see others ask for it as well. So when the rare chance they do ask. I enjoy it. But my real question is this. Could i being in my truck ask another trucker for arm pump too. Like is there an unspoken rule I’m not aware of. ? Genuine curiosity

