quake in one's boots
to be afraid, to shake from fear
I was quaking in my boots when my boss told me to come to his office.
Giant Sinkhole in Guatemala
This is pretty unbelievable.?After rainstorms and a broken sewer main in a small town in Guatemala,?a massive sinkhole, 330 feet deep has fallen into the earth in contrast to 151 feet of the Statue of Liberty.