the uncontrollable desire to make love to various members of the animal kingdom, specifically those found in a barnyard. This is named after the Aggie students from Texas Ag & Mech (Texas a&m). Most commonly associated with the humping of sheep. Ugly women may be used during long nights of drinking, which led to the admission of women in the last half of the 20th century.
Bubba came down with a bad case of Aggie syndrome on a visit to College Station. He and his sheep will be getting married in two weeks due to the pregnancy.