marked by quiet and caution and secrecy; taking pains to avoid being observed; "a furtive manner"; "a lurking prowler"; "a sneak attack"; "stealthy footsteps"; "a surreptitious glance at his watch"; "someone skulking in the shadows"
evading duty or work by pretending to be incapacitated; "they developed a test to detect malingering"
If you skulk somewhere, you hide or move around quietly because you do not want to be seen. You, meanwhile, will be skulking in the safety of the car. to hide or move about secretly, trying not to be noticed, especially when you are intending to do something bad = lurk skulk about/around/in etc (From a language)