GR translation: Skeeter turn yer meter, down,

[Mike Jing]

V449.16-26, P456.30-40
       Lookin’ for a little fun—
       Big old bayou mosquito, oh my you
       Shoulda seen what he done!
       Poked his head up, under her dress,
       Give a little grin and, well I guess,
       Things got rough on Buf-falo Bayou,
       Skeeter turn yer meter, down,
       All—right—now!
                              Ya ta, ta-ta, ya-ta-ta, ta-ta
       Lookin’ for a little fun,
       Ev-rybody!

What does "turn your meter down" mean here?
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Pynchon-l / http://www.waste.org/mail/?list=pynchon-l