Co-ed bachelor/bachelorette parties are becoming increasingly common, as the traditionally held division of genders starts to (slowly) erode. Although many people still opt to do separate bachelor and bachelorette parties, out of tradition and because perhaps they’re more comfortable that way, those few who choose to combine the two parties tend to meet some challenges. What activities are out there that firmly and universally cross the gender divide? At the end of the day, everyone’s friends, so the right way to look at co-ed parties is not to try and choose which activities appeal to which gender – it’s more…