A truck driving lesbian
"Lessa" is short for Lesbian in the Icelandic language, but "trukka" basically means "truckin". So we're basically talking about a the kind of a lesbian that drives a truck, but only theoratically. English has the word "dike" but it is not as discriptive, so "trukkalessa" should be the word.
Will full respect and much love for gay people, this is just a word you need to know.