On hearing the news, his jaw dropped.
When you stepped on to the beach, your jaw dropped: it was vast.
My jaw dropped as I saw the pieces of candy flowing from the crack.
As you can see, my jaw drops some, but my lips do not move, they stay relaxed.
Medicine and gummy bears are both encased in carnauba wax and neither has a mind blowing, jaw dropping look.
Papa's jaw dropped when mama told him that sister had cheated on her final exams -- not to succeed but to fail.
