pack a wallop

pack a wallop

 and pack a punch
Fig. to provide a burst of energy, power, or excitement. Wow, this spicy food really packs a wallop. I put a special kind of gasoline in my car because I thought it would pack a punch. It didn't.
See also: pack, wallop
References in periodicals archive ?
Looking for Vaccines That Pack a Wallop Without the Side Effects," http://www.
Patrick Goda, then at Los Alamos, had revealed that an asteroid slamming into the ocean can pack a wallop.
The cannons pack a wallop, DeNubilo said, though they are smaller than cannons that would be permanently mounted on a fort's ramparts.
At 90-million strong, mobilized singles could potentially pack a wallop at the polls, as almost 39 million American singles did not vote in the 2000 presidential election.