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1.
When a male/female is in a sexual relationship 'slump' or dry spell, they 'hump' or have intercourse with someone below par.
Tim hasn't gotten laid in over a year, so he's going to slump-hump that manish/overweight girl he met at the anti-war demonstration.
by Narbonne October 01, 2009
 
2.
When a male/female is in a sexual relationship 'slump' or dry spell, they 'hump' or have intercourse with someone below par.
Tim hasn't gotten laid in over a year, so he's going to slump hump that manish/overweight girl he met at the anti-war demonstration.
by Narbonne1944 March 13, 2012