A group at a Washington D.C. restaurant was talking openly in the bar area Friday afternoon about a national secret that was about to literally explode hours later — the bombing of Iran.

Attorney Mark Geragos was at Joe’s Seafood, Prime Steak & Stone Crab at around 3:00 PM ET, getting something to eat and preparing to do the “2 Angry Men” podcast with Harvey Levin … from his seat in the bar area.

Just before 3:45, Mark overheard people at the next table in the bar area talking about Iran. There were 4 men sitting at a high-top table, and 2 women were standing next to the table. The men were dressed in business attire … sports coats and collared shirts. Mark says one of the men said in a voice loud enough for him to clearly hear … the U.S. was going to bomb Iran “today.”

Mark’s not sure who these guys were, but Joe’s is .2 of a mile from The White House.

Later in the podcast, Mark says, “By the time this [the podcast] drops [1 PM ET] in Iran [pause] I’ll leave it at that.” Then Mark reveals what he overheard — “Today is the day.” Sure enough, hours later, the U.S. and Israel were bombing Iran.

And get this … one of the guys at the table was singing this to the tune of The Beach Boys, “Barbara Ann,” …

“Bomb Bomb Bomb

Bomb Bomb Iran.”

It’s literally the definition of “Loose lips sink ships.”