Broadsiding

[Monty]

The act in which two men slide their penis along each others shaft in a back and forth motion.
This is similar to the [naval] act in which two warships would [sail] [beside] each other in order to exchange fire.

[Hina Muqadas]

Broadsiding in Speedway. The method of cornering used by the riders. They use their left leg and foot as a pivot. This technique is also known as power sliding.

[Justin Bieber]

a strong written or spoken attack (on someone):