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2.
(verb) To coat generously with a paste or semi-liquid substance.
She slathered my weasel with her greazle.
by Slickery Dickery Dr. January 08, 2004
 
1.
The act of rubbing thick cream, lotion, or even jiz all over something.
I slathered her up with my man juices.
by Yogi Vinnie October 30, 2007