n. Spanish for Morning Wood, literally 'wood of the morning'. A politically correct way of expressing the fact that you have an erection that will pass undetected by the usual female, unless she is hispanic, in which case you're screwed.
Logan: I got out of bed, and all I wanted to do was beat it.
Aaron: Did you have madera de mañana?
Logan: You know it!
Aaron: Did you have madera de mañana?
Logan: You know it!
by Raleseau January 4, 2011