Gex is the sarcastic gecko star of Crystal Dynamics' 1990s platformer series, famous for firing off movie-quoting one-liners as he travels through TV-themed levels. 'Let's get it on' fits his showman personality and comes from the voice clips that play during gameplay in the original Gex titles. Clips like this spread through retro gaming soundboards where fans collect short character quips. It endures because the line is short, confident and instantly usable as a starter cue, much like other classic game catchphrases shared online.