The act of making love from behind, facing your partner's back; differentiated from doggy style because, when cavefishing, your partner is lying facedown and you support yourself on your elbows as in missionary position. Origin: iPhone's annoying tendency to autocorrect "facedown" to "cavefish".
by cavefishingwalrus November 01, 2011
A sexual maneuver in which a man inserts his penis into a dead (preferably) fish and procedes to engage in missionary sex (leading with the tail fin) with a female partner.
by TroglodyteTroglobite April 06, 2011