Top Definition
1. When one cannot "get it up" and has Erectial Disfunction
2. When one cannot ejaculate, or has sterile sperm.
As Grandma explained how Grandpa was Nut Lagging, we all threw up all over her nig face.
#nut #lagging #lag #erectial disfunction #nig face #fat
by SomeFatNig October 11, 2010
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