Definition of "sheboon"

I was recently contacted by an old sheboon girlfriend, who suggested we "do lunch" sometime.

2011 August 13, Virtual Shadow or VS-1 [username], “SHEBOON LOVER”, in alt.support.depression‎ (Usenet)

The unwed, government dependent sheboons who use food as a babysitter, while stuffing their own faces constantly.

2014 July 19, Fred Oinka, “Re: Obesity, Waffle Houses, And the South”, in alt.fan.rush-limbaugh‎ (Usenet)

sheboons don't take baths !!

2015 January 31, THE NI99ERS [username], “Re: Whitney Houston's daughter found unresponsive in tub”, in alt.gossip.celebrities‎ (Usenet)