there she blows and there she blows matey~
Meaning: there she blows. (nautical) The traditional hail of the lookout in a whaler (whaling ship) when sighting the spouting water thrown up by a whale surfacing. Sexual, when the wife / GF is almost at the guys CUM condition for shooting his load. Also when the wife / GF is doing the same for the guys buddy / friend and its being watched by the other guy!
Example: This playful and sharing wife was in the middle of doing a there she blows matey, while her hubby looked on and somebody was taking pics for that Kodak moment!