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faster than you can say Jack Robinson
Extremely quickly; almost immediately; suddenly or in a very short space of time. Once I'm finished with high school, I'll be outta this two-bit town faster than you can say Jack Robinson! I was out fishing one day when, faster than you can say Jack Robinson, a 20-pound trout jumped out of the water and right into my lap!
faster than greased lightning
Extremely fast. Wow, that car just blew past me—it's faster than greased lightning! When I take tests, I'm faster than greased lightning, so I'm sure I'll be the first one done.
faster and faster
at an increasing rate of speed; fast and then even faster. The car went faster and faster and I was afraid we would crash. The cost of education goes up faster and faster every year.
faster than a speeding bulletand FTASB
phr. & comp. abb. Very fast. (From the introduction to the old radio program, The Adventures of Superman. Superman was faster than a speeding bullet.) I’ll be there FTASB. I ordered it on Wednesday, and it was on my doorstep, faster than a speeding bullet, the next day.
faster than a cat lapping chain lightning
Another old Southern expression, this one meaning very fast indeed.