What is Boner Factor?
1.
A certain factor a person/object has that makes a man get an erection.
Dead bodies hit the boner factor for necrophiliacs...
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2.
the increase in length of your penis when you have a boner
Dude my dick is like 5 inches not including my boner factor
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Random Words:
1. 
Exactly like portmanteau, only much easier to remember.  Two words are fused together by either joining a common syllable inbredneck or ..