New Yorkers were so rapt by the Super Bowl LIX halftime show that they avoided another type of bowl entirely.

Big Apple residents used the lackluster Eagles-Chiefs matchup as a welcome potty break to prepare for the real star of the show: Kendrick Lamar’s halftime performance, The Post has learned.

There were a whopping 558,594 fewer toilet flushes during Lamar’s blockbuster 13-minute concert than in the first half of the entire game, data provided by the Department of Environmental Protection shows.

The overall water demand dropped from 1,125 million gallons to around 1,026 when the “HUMBLE” star took the stage.

Water demand was at its absolute lowest when the rapper burst into his Grammy-winning diss track “Not Like Us” at 8:38 p.m. — meaning ʙuттs were off the john and moving in the air.

Flush data was relatively high for the first half of the game, indicating that fans weren’t too enamored by two-time champion Chiefs choking right out of the gate. They went into the second half bizarrely trailing 24-0 behind the Eagles.

Flushes across the five boroughs remained low for the second half as viewers presumably watched in anticipation as Kansas City desperately attempted to claw their way back, an effort that went down the drain.

The Eagles confidently celebrated their victory before the game even ended — they dumped a bucket of Gatorade over head coach Nick Sirianni’s head three minutes before Philaelphia sailed to its 40-22 win.

When the final whistle blew close to 10:17 p.m., about 250,000 New Yorkers hit the john, the DEP said.

That number is significantly lower than last year’s water flow surge — there were about 467,881 flushes when the Kansas City-San Francisco nail-bitter finally concluded in overtime.

The spikes in water usage during the Super Bowl are nothing new — audiences are typically glued to their chairs during the plays, commercials and halftime shows and rush to the bathroom for the few small breaks they can find during the extravaganza.

In the hours before the game, water supply operators send extra water down to Hillview Reservoir in the north Bronx in preparation for the spikes.

“Just for reference, on a normal Sunday, the demand for water follows the typical daily patterns of the City— as night falls and more people go to sleep, the demand for water steadily goes down,” the DEP said earlier this month.

“That pattern continues until people begin waking up, showering, brushing their teeth, making their coffee, and preparing for the day ahead.”