The strange erection you get on Christmas morning due to the excitement of opening presents or the thought of opening presents.
I got a Christmas boner when I saw a huge present by the tree that was for me.
by GaMeRuInEr December 25, 2006
The raging stiffy that one gets at Christmas time, because of all the presents and holiday cheer.
Many people do not take down their christmas trees until after the new year, because they have some leftover Christmas Boner.
by Rick James, Beothch November 30, 2009