Making out

Making out usually serves as a colloquial term for the act of two people engaging in prolonged kissing. Making out is usually done to express affection to a boyfriend/girlfriend or spouse, or to express sexual attraction to a prospective sexual partner. Making out usually consists mostly of French kissing, although this is not a requirement. An episode of making out is often referred to as a make out session.

Other popular phrases

• From baseball, reaching "first base", "second base", "third base", and "home run" is a euphemism or an innuendo for referring to the successive stages of an intimate relationship:
• First base is usually understood as making out, with second and third considered to be the touching of breasts (at least in a heterosexual couple) and oral sex, respectively. In this case, "making out" is used to mean foreplay, with sexual coitus as the home run. Because of this, the baseball terminology is likely one of the sources of confusion from people that believe making out leads to sexual intercourse.
• "Lip-locking", as a couple engaged in making out looks to be locked at the lips.
• "Sucking face", as a couple engaged in making out looks as if they are sucking one another's faces.
• "Swapping spit", since a kisser can get his saliva in his/her partner's mouth.