420 Day Free Comedy Night — SF

San Francisco’s 4/20 calendar now includes a free comedy night at The Function, with Monday shows tied to an all-weekend festival listing. (sf.funcheap.com) Funcheap’s listing says the 420 Weekend Free Comedy Festival runs Friday, April 17, through Monday, April 20, 2026, at The Function, 1414 Market St. in Mid-Market. Monday’s schedule shows sets at 7 p.m. and 8:30 p.m. with free RSVP admission or a $4.20 VIP option. (sf.funcheap.com) The same listing says the promo code “FUNCHEAP” unlocks the deal on the checkout page, and that Friday through Sunday tickets are priced at $4.20 instead of the usual $20 to $25. Funcheap also says Monday includes happy hour all night. (sf.funcheap.com) The event is being pitched as an indoor alternative to San Francisco’s larger 4/20 tradition in Golden Gate Park. Funcheap’s April festival guide still lists a Hippie Hill celebration for April 20, 2026, while the comedy post says Golden Gate Park’s 420 fest “might be canceled this year.” (sf.funcheap.com, sf.funcheap.com) That tension helps explain the sales pitch: a ticketed room, a fixed start time, and a bar program instead of an open-air gathering. The Function is described in the listing as San Francisco’s first and only Black-owned comedy club and cocktail lounge. (sf.funcheap.com) Funcheap says the lineup will feature Bay Area comics who also appear at Punch Line, Cobbs, and San Francisco Sketchfest, though the listing does not name individual performers. The venue notes also say it is 21 and over, requires valid identification, and enforces a two-drink minimum during shows. (sf.funcheap.com) The fine print is typical for comedy clubs but matters for anyone reading “free” literally. Funcheap says the venue is cashless, reserved seats are held until five minutes before showtime, and late arrivals or guests without reserved seating may end up in best-available seats or standing room only. (sf.funcheap.com) The Monday listing also sits alongside The Function’s regular free-comedy programming. Funcheap’s comedy calendar separately lists a “Free Monday Comedy Night in Downtown SF” at 7 p.m. on April 20 at the same venue. (sf.funcheap.com) For people making last-minute 4/20 plans on Monday, April 20, the practical takeaway is simple: RSVP first, show up early, and expect the catch to be drinks, not a cover charge. (sf.funcheap.com)