When only one of a dog's ears points straight up or out to the side.
Hey, look at that little chiweenie's ear! It pointing straight out the the right and looks like he has an earrection.
by IkeNerd March 07, 2016
when you get turned on by the sound of taylor swift's cackle
Yo i got an earrection when i heard taylor swift's shake it off. Dat sh*t is fire.
by Byotch_1_urban_dic_kween February 15, 2015