The Space Butthole is a nickname for the various wormholes, time rifts, and other sphincter-like space anomalies encountered by the Enterprise. Some buttholes have been penetrated by the Enterprise (or its various probes & shuttles), while others have discharged objects. An anomaly seen in "Time Squared" (S02E13) had all the characteristics of a classic Space Butthole, but was referred to as a “Smoky Shower Drain”.
Although not explicitly mentioned, it's assumed that the Bajoran Wormhole would therefore be referred to as the "Bajoran Butthole" by members of the Federation. This of course would create numerous inferences and euphemisms that would be inappropriate to publish, but that the viewer is encouraged to imagine.
Gallery[]
Buttholes in Space
The Enterprise dangles its nacelles into a Space Butthole in "Time Squared" (S02E13)
Tam admires Data's painting of a Space Butthole in "Tin Man" (S03E20)
Picard and Data observe an approaching Space Butthole in "Clues" (S04E14)
A Space Butthole created by Lt. Barclay in "The Nth Degree" (S04E19)
Enterprise-C emerges from a space butthole.
The Bajoran Wormhole, a spectacular example of a Butthole in Space.
The fragments of a comet emerge from the Bajoran butthole.
three comet fragments leaving the b-hole
The Bajoran lightship emerging from the B-Hole
The USS Enterprise rips a new hole with an imbalanced matter-antimatter mix ratio.