A denizen of San Francisco's Tenderloin district, indicating some level of insanity, insobriety, or general unsavoryness. Usually refers to the homeless and/or beggars who flock to this neighborhood, but can also apply to many different types of these strange creatures.
1. I can't get the door open, there's a loinling sleeping in front of it.
2. There's that loinling who pushes her cat around in a stroller. At least she's fully dressed today.
3. Did you see that loinling walking backward up the street for no apparent reason? No, the one in a Storm wig and his arms covered in foil.
4. Don't let that loinling open the Carl's Jr. door for you, he'll get pissed off and demand you pay him.