[Der_Einzige]

In regular bars it's downright rude to walk up to most groups if you're not in that group, and good luck finding a single woman drinking by herself.

In night clubs? Better hope you've hit the gym for the last month...

[nkingsy]

Groups could be drinking at someone's house. They're paying money and arranging transportation to be doing their group drinking in public. It's rude not to engage with them.

[mikhael28]

hahaha you are a funny guy, makes sense to me.