The phrase "boom boom" typically refers to loud, booming sounds or actions. It can also be used to describe explosive things or events. Full definition
I believe we'll see ozil flourish like boom boom bang. (justarsenal.com)
My daughter and I love to read Chicka Chicka Boom Boom by Bill Martin Junior, John Archambault and illustrated by Lois Ehlert. (organic-baby-resource.com)
Rachel Feinstein and John Currin at the 10th anniversary of the Art Production Fund at Boom Boom Room, The Standard Hotel, New York. (purple.fr)