You've ditched your wine glass in favor of the bottle
On the one hand, you're saving the company money on disposable stemware. On the other, you're, um, drinking a jug of Carlo Rossi on top of your desk.
You notice that your boss' wedding ring disappeared mid-conversation
And the conversation has suddenly shifted to a wonderful timeshare in Cabo.
Creepy Donna from accounting is starting to look like Sexy Donna from accounting
When you see her, once again, accidentally using her glue stick as Chapstick and your thoughts go from "WTF" to "DTF?!" -- actually, maybe stick around for one more round. This could get interesting.