John Stamos’ stripped-down birthday tribute to Glen Powell has fans saying, “Have mercy.”

The “Scream Queens” alumni showed some skin in a slew of playful snaps posted via Instagram Tuesday in honor of Powell’s 37th year.

“Happy Birthday @glenpowell, the man who’s seen me naked more times than I’d like to admit,” the “Fuller House” alum, 62, captioned the social media upload.

“Love you buddy!” he continued. “Steam room date soon? xo JS.”

In the carousel’s first photo, Stamos and Powell walked on the street in only sandals, respectively covering themselves with a skateboard and shopping bags.

They were joined by Taylor Lautner in the subsequent shot as the trio stood smiling in showers.

The slideshow concluded with pictures of Stamos and Powell in a steam room, covering up with towe

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