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1.
When a dog licks your butt.
I was awakened the other morning by my dog performing canalingus on me. I was thrilled for a third of a second until I woke up, realized whose tongue it was, and kicked him out of bed.
by floorwax June 23, 2009
 
2.
The act of licking or rubbing ones tongue on the rim of a can. Similar to cunnilingus and analingus.
"Just chug that beer already. Stop giving it Canalingus and drink it."
by Jimmy_The_Donut April 01, 2014