Outrageous headlines? Pun-derful! The fifth annual New York Post Edition of the Punderdome, hosted by funny father-daughter duo Fred and Jo Firestone, is set for Thursday at Littlefield in Brooklyn. Winners of the wordplay com-pun-tition will be decided through the Firestones’ proprietary “Human Clap-O-Meter.”

Prepare for four rounds of witty wordsmithing (the ‘Dome is a serious spectator sport, according to the event’s website) from the writers and editors who brought you the likes of “Headless Body Found in Topless Bar” and “Osama Bin Wankin!”

Pun-in-cheek prizes will be awarded throughout the night — blenders, Snuggies and other “As Seen on TV” were among years’ past trophies — not to mention tabloid glory.

Tickets are $12 to watch Post vets take on the city’s (second) best punsters. $12; 21 and over. Thursday, 7 p.m. Littlefield, 635 Sackett St., Gowanus

Other events to check out:

A game about nothing

Baseball may well be America’s pastime, but watching “Seinfeld” must be a close second. The Brooklyn Cyclones will celebrate Seinfeld Night Saturday for the show’s 30th anniversary, complete with an Elaine Dancing competition. Put your best left foot forward for that one! All ticketholders will go home with a replica of the infamous pasta masterpiece, Fusilli Jerry. $20, Saturday, 6 p.m.; MCU Park, 1904 Surf Ave., Coney Island

Splash zone

Indulge your inner Aquaman at City of Water Day. New York Harbor will teem with free tours on boats, from tugs to schooners. Borrow a kayak at the Brooklyn Bridge Park Boathouse or make your own from cardboard for a kayak race under the bridge in Manhattan. Then, check out the marine life and exhibits at the South Street Seaport Museum. Free, Saturday, 10 a.m. to 4 p.m.

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