I don't know what this means in slang but I guess no to little potential based in that because only 390 global exact searches. I see more potential in the line someone need it as acronym, for last year appear a very few 3L.us sold for decent amount, check at namebio
So if you are lucky and some day someone need it (could happen or not), probably $xxx to low $x,xxx. Otherwise these domains have a low value as reseller price