Internal Massage 

A casual way of suggesting sex.

Guy: Yea baby, tonight i will come over and give you a full body massage.

Girl: Oooooh I love massages. What kind will you give?

Guy: A Full-Body and an Internal Massage

Internal Massage by Mr. White April 7, 2004

Internal Massage 

Another term for fingering - originates in a role playing act in which the male acts as a "naughty" massage therapist and the female lays on her stomach, acting as a client.

First he started by massaging my shoulders then he gave me an internal massage!

Internal Massage by Sweetpea & Baby Cakes April 19, 2008