Dear Faldage: I never listen to games, doubled in spades to basketball games, but had
assumed "Rimshot" was manic-mouthed sportcaster word for a basket with ball never
even touching the rim. "Rem acu" seems quite similar to me, in my benghted cultural isolation.

Edit: I searched, and can't believe what I got:

Rimshot [Pasties And A G-string ] When the drummer strikes the rim of a drum with a
drumstick, producing a loud, abrupt sound. It's often used to accentuate the weak beats offbeat
(The Folk File, Bill Markwick )