The hand signal, now viral on Instagram, involves tucking your fingers over your thumb to reportedly alert someone you need ...

Not every hand gesture is universal ... but not in Brazil Making a circle with your thumb and your index finger is how to signal "OK" in the US. Americans should be aware that the gesture has ...

When signaling for a refreshment stop, the rider will close their left fist and extend their thumb ... hand facing forward and index finger extended. It's very similar to the "Follow Me" signal ...

Double Tap involves tapping your thumb and index finger together twice ... you can also use hand gestures but a bit ...