Tongue Slapping 

When a male or female uses their tongue to lick a person of the opposite genders' face in order to gain their attention.

Girl: 'I had to use tongue slapping last night because the guy next to me was drunk and singing"

Tongue Slapping by Urban Nutter November 13, 2011

swapping tongs 

the act of exchanging blow jobs

Fuck, I'd swap tongs with you right now. If you know what I mean...

The two men really enjoyed swapping tongs.

swapping tongs by bbsassquatch August 1, 2022

Swapping Tongs 

the act of exchanging blow jobs.

Fuck, I'd swap tongs with you right now! If you know what I mean...

These gay men enjoyed swapping tongs.

Swapping Tongs by bbsassquatch August 1, 2022

slipping the tounge 

or slipped the tounge,
when people are kissing without tounges then one of them slides their tounge into the other's mouth

Jane got pissed when Tom suddenly kissed her and tried slipping the tounge.

slipping the tounge by Dawn June 15, 2002

slipping the tounge 

this is pretty self-explanatory.
I have no idea why Dawn felt the need to define it for us.

Slipping the tongue = Slipping the tongue.

slipping the tounge by *tt December 19, 2002