Dutch abbreviation for 'Leipe Shit Ouwe', which is an expression of astonishment or amazement.
"Check die kerel daar met z'n scapino jas"
"LSO"
Low Speed Operation, a group of people that don't know what they're doing or are just doing it really slow.
Man, this drive-thru sucks, what an LSO!
Guy 1: "Yo bro, I don't know what to do here."
Guy 2: "Bro, you just have to chose your LSO"