Even though they're not that big, they can pack quite a punch.
It means someone or something can be small but pack a punch.
The message was short and simple, yet it packed a powerful punch.
Now there was a woman who packed a punch, Trevor thought.
It packed extra punch in person, even with just a handful of words.
Most of them are pretty short, but pack a visceral punch.
Be it dance or fights, he really pack a punch.
Such efficiency means a small reactor can pack a big punch.
Although its performance in this role fell below expectations, it did pack a heavy punch.
Hellions were fine, so long as they didn't pack too hard a punch.
Idiome