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

For instance, the leader of your biker group may swing their left palm downward to signal other bikers of the group to slow down. Similarly, there's another important hand gesture that you should ...

The hand signal, now viral on Instagram, involves tucking your fingers over your thumb to reportedly alert someone you need help. To stream 13News Now on your phone, you need the 13News Now app.