Ultimate GFE means: The Ultimate GFE Girl Friend Experience – A prostitute acts like her girlfriend while in bed. Regular GFE experiences will include cuddling and kissing in both Light French or Deep French. This full, complete and unabridged bareback experience can be enjoyed orally and via the vaginal as well as with your girlfriend. In bed with Ultimate GFE is completely different from having sex with a girlfriend. (in Community Dictionary, added by Tatiana Key)