Damon Wayans Jr. — SHOT CALLER … Drops $2,300 on Booze for Movie Extras

Exclusive 0524_damon_wayons_article_shots_wm_tmzDamon Wayans Jr. became the most popular guy in an ATL nightclub this week … when he whipped out his credit card and bought a round of 200 SHOTS … our sources has learned.

It all went down inside Vanquish nightclub on May 20 — where DWJ and “New Girl” star Jake Johnson had been shooting a scene for their movie “Let”s Be Cops.”

We”re told the club was packed with more than 200 extras for a crazy bar scene — and Damon was so pumped about how the scene went down, he sprung for shots … FOR EVERYONE!

Damon even jumped behind the bar at one point and helped pour the booze … tequila, vodka and Jägermeister.

Total bill — $2,300 … plus tip (we”re assuming he tipped).

FYI — Damon was sporting a full cop outfit for the scene.

“To protect and serve … booze.”