It’s common practice to use your smartphone on the go. That's what it's made for. Chances are you’re texting, tweeting, posting an image on Instagram, or responding to an email while being completely oblivious to what’s happening around you. Just ask teen Alexa Longeira, who fell down a manhole because she was responding to an text message. Longeria was just one of several people who have humiliated themselves by not paying attention while texting. However, she dodged a bullet as the incident was never caught on camera. Others weren't so lucky. If you're in the mood for some comic relief check out these videos of people who haven't gotten the hang of walking and texting at the same damn time.