Waving
From Tardis Wiki, the free Doctor Who reference
When an arachnid woman from Glomi IV waved at Jason Kane, he chose not to wave back as he did not want her to suck out his puréed organs through his urethra. (PROSE: The Two Jasons)
Doctor Who, Louise, and Susan waved goodbye to Tom Campbell when he departed from TARDIS in 1977. (COMIC: Daleks, invasión a la Tierra año 2150)