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1.
When someone has no sexual preference and can not be defined by being gay or straight.
There is no parade for a slagsexual, unless you count the solo walk home on Sunday mornings.
"What she's sleeping with Annie now? I did not know she was gay."
"Oh she's not gay or straight, she's just slagsexual. She sleeps with everybody."
by darlingdear January 30, 2012