coquetry,
dabbling,
dalliance,
dallying,
fiddling,
flirtation,
fooling, fooling around,
idling, jerking off,
kidding around,
loitering, messing around,
monkeying, monkeying
around,
piddling,
playing, playing around,
pottering,
puttering,
smattering,
toying,
trifling