Do You Serve Symbionts Here?

He clinked down the last of his coins and raised a finger to the bartender. A frothy mug appeared before him and he quaffed it down almost as quickly as the coins had vanished. A contented sigh escaped from somewhere deep inside along with an unintended belch. This was quickly followed by a rumbling gurgling noise as his expression shifted from a smile to a grimace. The rumbling grew louder, and soon he grasped his bloated belly as the internal contortions surfaced and those around him quickly made room as he fell to the floor, writhing and moaning. When the vomiting began, the emergence of the alien worms scattered the bar patrons. Too late, though, for the worms of Rigel Three are fast and oh so hungry.