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1.
Something that is so awesome, it can make you hard without physical contact.
That cake was so bonerizing i had to tighten my belt a notch to hide my hard on.

Dude, I got a quadruple kill in call of duty last night with a RPG and it was so bonerizing
by Julesfools February 18, 2010
 
2.
Something or someone that makes you get an erection
That chicks ass is bonerizing
by Mr nipple grinder September 19, 2014
 
3.
to have something so cool it makes you have an erection weather with the cock or nipples
that car is bonerizing
by justin hellerstedt August 09, 2006