I believe I've heard "Climb Climb" once but it was muffled. It certainly struck me at the time as that sort of electronic voice (male) and alarm sound you hear in movies/tv. It was disconcerting to say the least. Really only had time to think I realised what I heard, inhale sharply in the "oh crap" sort of manner, before the plane landed very hard in TPA.

It seemed like a normal descent/landing until that point, we had just cleared the fences/barriers/etc.. then the alarm, then a few seconds of silence and suddenly everything in the cabin bouncing as touched down very hard.

I suppose it could have been a different alarm, but it sounded like "Climb Climb" at the time.