Like a sexual pole vault, the woman is on all fours, and the
gentleman then "leapfrogs" over her from behind, however his
cock may get caught in either her vagina or anus, before he makes it fully over her.
This act can also be performed by a woman wearing a strap on dildo, to either a male or female recipient.
Fuck me, I did the rusty starfish leap with my
girlfriend for the first time last night, got my
cock square in her shitter first time, result.