I grew up in the south. We used "goot" interchanably with "goober", "goob", "geeb" - all words meaning "dick". As in "goothead", "goot smoocher", "goot gobbler" etc.
Goot is a synonym for a mans Penis. This word had its origin in 1989 in Pittsburgh, PA at a local private school in the Bethel Park PA area. Other synonymous words include: pecker, richard cranium, Dick Head , cock, monkey, little peter, johnson, free willie, the bone dancer, shlong, dong, wiener, he pussy, Mangina.