Texas slang for cock sucker. Derived from another term for a Rooster is cock, and another term for smooch is kiss, which is close to suck.
Could mean gay, or just a jerk.
"Hey Travis look at that rooster smoocher over there in the purple pants."

or

"My boss is such a rooster smoocher for making me work on Saturday."
by skinnyfatty March 3, 2009
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