This position is similar to other jockey variants. In this position the giver is on all fours. In kneeling jockey the giver is kneeling. In standing jockey the giver is standing.

prone bone

The sex position in which the [bottom] is laying flat (emphasis on laying completely flat) on [his] belly with penis entry from behind. This position often enables the [bottom] to work the muscles in the region resulting most likely in an overpleasurable time for the [top] involved, thus causing premature ejaculation.

I nailed [Linus] in prone bone last night!

Source: Urban Dictionary

prone bone

A sexual position where the [bottom] lays flat on [his] stomach with [his] legs together and the [top], on his knees, stradles [the bottom's] legs just below the butt, sitcking his penis into [the bottom's] now tightly-squeezed [manhole].

[Jeff] was napping face down in the nude when Rick climbed on and gave [him] the prone bone.

Source: Urban Dictionary