Dublin Slang for ones head. Derived from the town of SallyNogin. In yesteryear, people used to refer to their heads as theis nogins.
How was your Sallyer on Sunday morning Stephen. You fairly lowered the juice into you.

Or,

Joe crossed the ball in, but PL missed the net when he missed a glorious chance with his sallyer.

Whilst playing heads and volleys, or 7 Up, a striker may often be heard roaring, on the sallyer son.
by goose licker June 17, 2009
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