To Brendan Parsons, 26, selling oysters on the street seemed like a great idea, and he couldn’t believe no one else in Portland was doing it yet.

Drop by for “oyster happy hour” between 4 and 6 p.m., and play a little game with Parsons for a discount on your oysters. He calls it “throw what you know for a buck a shuck.” If you beat him at rock-paper-scissors, you pay just $1 per oyster for up to three oysters.

WHAT HE SELLS: Oysters from the Damariscotta River, with choice of condiments: cocktail sauce, horseradish, lemon, and four mignonettes: classic French, champagne tarragon, seaweed cucumber and sesame ginger.

HOW MUCH: $3 per oyster, or $15 per half-dozen

CUSTOMER FAVORITE: Oyster with sesame ginger mignonette. People who are new to oysters tend to go for the cocktail sauce and horseradish. (Parsons prefers the seaweed cucumber because it doesn’t overwhelm the flavor of the oyster.)

WHERE TO FIND HIM: Parsons lists his location at the beginning of every week on his Facebook page. His hours are generally 11:30 a.m. to 6 p.m., or until 8 p.m. on weekends. His two favorite locations are Commercial Street (in front of the Custom House) and Bissell Brothers on Industrial Way, where he goes once a week.