What is Mdf?
1.
A semi-erect penis.
Name after the building material of the that name (Medium Density Fibreboard) which is "not quite wood".
She was not an attractive lady. When it came to performing my gentleman's duties all I could muster was a poor MDF.
2.
MDF stands for Most Defiantely Fuckable, also a MLG Halo 2 Team ran by Brandon in Illinois
*Hot Girls Walks By*
Old Man:Damnnn That Girl Is MDF come Here Sweeeeetie
See 
Random Words:
1. 
adj. /ill-(y)OO-minn-ESS-uhnt/ 
1. Referring to the state of being both illuminated and luminescent, 
2. thus suggesting the quality o..