The generic sandals given to inmates in county jails across the nation for daily wear and for use in the showers..to "skate over the sperm". Definitely found at the East and West county jails in Contra Costa County, California.
I got hemmed up for smacking my chick cuz she was fucking my weed dealer. After I got my jail
clothes, they took my shoes and gave me a pair of Sperm Skates.