What is Broadsides?
1.
A challenging and often misunderstood sport. There are many different versions of the rules, but all are based on the British Broadsides Society's 1946 publication "Standards in the Modern Game", which was mostly derived from the then-current version of Eton Broadsides. The full competition rules can be obtained by written application to the International Federation of Broadsides Players (IFBP).
Me and Will have been playing a whacking-off game called 'Broadsides'.
2.
A game for 2 or more players, seated, attempt to hit each other with their cum. (The cum has to be launched from the penis directly, it can't be thrown).
"Boys, that's enough broadsides for one day- you'll make yourselves sore, and I've got friends coming round any minute"