Verb arse around has 2 senses
  1. bum, bum around, bum about, arse around, arse about, fuck off, loaf, frig around, waste one's time, lounge around, loll, loll around, lounge about - be lazy or idle; "Her son is just bumming around all day"
    --1 is one way to idle, laze, slug, stagnate
    Sample sentences:
    Somebody ----s
    Somebody ----s PP
  2. horse around, arse around, fool around, fool - indulge in horseplay; "Enough horsing around--let's get back to work!"; "The bored children were fooling about"
    --2 is a kind of play; joke, jest
    Sample sentence:
    Somebody ----s
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