Clear as the Nubian sun: Similar to "clear as day." Cain uses this saying when referencing to the non-existent Raiders he allegedly pursued when he made his attack on the Cylon fuel tankers ("The Living Legend, Part I").
Daggit drivel: Similar to "garbage." Lucifer uses this term when asking if Baltar believes Specter's false reports ("The Young Lords").
For the glory of Caprica: A saying used by the Colonials, particularly those from Caprica ("Gun on Ice Planet Zero, Part II").
Go rust yourself: Typically used towards Cylons. Cadet Cree says this to Vulpa while the Cylons interrogate him ("The Gun on Ice Planet Zero, Part I").
Laser in their side: Similar to "thorn in their side." Starbuck uses this term to describe how the actions of Megan's surviving children have kept their father alive at Cylon hands ("The Young Lords").
Like a dagger on a sunspot: Fidgety. Apollo points out that Starbuck acts this way during his pre-flight meeting on destroying the mines in the Straits of Madagon ("Saga of a Star World”).