FF: Please Drink Responsibly

Title: Please Drink Responsibly
Show: BtVS
Category: post-series
Pairing: B/G
First Line Prompt: "A heavy, dark shape splashed into the beer beside him" from Red Seas Under Red Skies by Scott Lynch
Notes: A great big thank you to dhw for giving me the prompt when I was completely writer's blocked and for the Brit-pick.

( A heavy, dark shape splashed into the beer beside him.... )