A motorist in a tiny convertible learned first hand why you should never just hang out on the passenger side of a moving semi truck in this dash cam video.

In the clip, a small black convertible is cruising right in the blindspot of a moving tractor trailer when the trucker decides to get out of the fast lane. 

The driver then clips the convertible and the two swerve to the left before the convertible spins right and the trailer swerves left. The trucker then realizes what has happened, and pulls over to the right shoulder, where the convertible driver has already come to a stop. 

Luckily, no one was seriously hurt in the incident, but it surely made for a bad day for both of these drivers.