Top definition
A person with a very rare kind of translocation trisomy.
Has the developmental stage of a child and a penchant for masturbation.
Apart from that a nice fellow.
Man: "Hi thar!"
Spiast: "Blergh." *fondles himself*
Man: "Nice noodle, spiast!"
by Anita Sammich March 16, 2007
Get the mug
Get a spiast mug for your barber Jerry.