Swapping Spit with Avril

The "Complicated" singer, never known for her kindness to the paparazzi, hocked a loogie at TMZ's photographer last night in front of Hyde nightclub.

Here's how it all went down: Avril was spotted getting into an SUV with husband Deryck Whibley, and the newlyweds got hot and heavy in the back seat. After getting interrupted by a couple of friends, the photogs went wild trying to get a shot of them.

Lavigne then stuck her head out of the side window, and yelled "Hey f***head, come here" to our cameraman. His gift for responding to her pet name -- her saliva in his camera lens. The group then broke into laughter, with someone in the SUV calling Avril a "bad bitch" before driving off.

Apparently Avril and Lindsay Lohan, who yelled "f*** off and die" to TMZ cameras the other night, have some anger issues!