The act of two or more males engaging in the act of placing their penises parallel to each other and simultaneously penetrating any orifice (i.e. mouth, vagina, anus), thus creating a fusion of their sexual phalanges.
I had such a great time with Suzy and Jonno last night, Jonno and I phalange fusioned Suzy so hard in her pussy it took a whole day to retract.
by phalangefusion February 01, 2017