Someone or something that is annoying, frustrating or incredibly difficult to overcome.
The double use of 'Rat' is used to establish the utter annoyance with the subject of the conversation.
'That Tony's a right rattin' rat'
'That was a rattin' rat of a question'
The act of inserting a maraca into an anus prior to vaginal or oral intercourse. If the sex is violent enough the maraca should rattle and the act of performing a "rim-rattler" is complete.
"Honey, it's been a long day in the office and I could sure go for a brisk rim-rattler!"
More often than not described as the last exhale of breathe, heard from the vibration of the neck when it is in an unusual position, allowing air to escape a narrow passage from the throat. It causes any of infinite odd sounds of expulsion of air.
You can imitate a death rattle for fun. Lean your neck backwards at 90 degrees and Pronounce terms such as "Ughrghrghrghrgh" or "Phhztttttt"