Simply a short/slang version of the word sensational
Did you see that goal last night? It was absolutely senners!
That house is senners!
Man last night was senners.
by BrillipYen March 18, 2011
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Someone who is a mong or has mental problems.
Wayne Rooney.

He looks like Shrek and can't speak properly.
by Padster September 2, 2004
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