Mooch

(from Oxford English Dictionary, probably only until Balderdash and Piffle Ends)

Mooch, v.
3. intr. a. To loaf, to skulk, to sneak. Now esp.: to loiter aimlessly; to dawdle in a bored or listless manner; to slouch. Freq. with about, along, around, off.
"She mooched in a dressing-gown"
"A projectile cannot mooch along its trajectory; if it slackens speed in mid-air, down it falls"