The javelin

[Mark Zuckerberg]

An sexual act consisting of [almost perfect] timing and skill. The easiest way to pull off this maneuver is to be already in the [Doggie] Style position. Right before the man finishes he pulls out and [rams] it home in the alternate hole while finishing in that single final thrust.

[Dave Paprocki]

a long stick with a pointed end that is thrown in sports competitions