The 69 position while getting taken form behind, that would be a sight to seeClassic man-in-the-middle MMF threesome.
I could ride a hard cock cowgirl (cowboy?) style while a queer girl rides mine, holding herself above the other guy's legs and against my crotch in a scissor-type position.
Or I could missionary her while getting fucked from behind, myself.
Go down on her while she's getting fucked, eating her clam, his dick and his balls like it's all one big recipe for fun.
Eat his cock while fucking her in any position.
Eat her, 69 her, or just fuck her mouth, while he fucks me.
Get spitroasted by her peg in my ass and his dick in my mouth.