The most common slang term for kissing with tongue is French kissing.
While "French kissing" is the most widely recognized slang, other terms exist and are used less frequently or regionally. These can include:
- Frenching: This is a verbal form of "French kiss" and can be used to describe the act of French kissing. As in, "They were Frenching in the back of the car."
- Snogging: Although often used to generally describe passionate kissing, "snogging" can sometimes imply the use of tongues.
- Other terms, depending on region and social context.
The term "French kissing" likely originated from the perception of French culture as more romantically adventurous. Regardless of origin, it's a globally understood term for passionate kissing involving tongue contact.