Top Definition
When you get an erection about a member of your family. The Alabama Erection originates from Alabama where it is commonplace for people to gain erections for family members. Sickos...
Mother: Is that a roll of quarters in your pocket or are you just happy to see me?

Son (in a sheepish manner): Its an Alabama erection.

**Pleased with her findings the two proceed to copulate**
by Dannance January 11, 2011

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