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1.
During a threesome, usually with 2 girls & 1 guy, the girl with the biggest breasts lies down (Girl A), the guy proceeds to tittyfuck her, while Girl B lowers herself onto to Girl A's mouth to be pleasured by her orally.
This can also be transformed into a Horizontal P if the two ontop decide to connect.
Literally a Horizontal F
Dick to Tit & Teeth to Clit
by spct March 08, 2010