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A sexual act performed on alien species with reptilian or avian ancestry. Derived from the television show Dr Who that features a female "lizard lady" dating a young human girl.
"so how does that work, is she eating pussy or ass?"

"neither, it's Cloacalingus, she's got snake parts and shits like a bird"

"ewe, I just threw up in my mouth"
by Dr Forge May 20, 2013
Licking of an anthro bird's cloaca, usually done by another anthro or a human. A term used by furries
the fox performed cloacalingus on the bird
by Meganium888 October 27, 2014