grow like a weed

To grow up very quickly. I can't believe your son has gotten so big! He is truly growing like a weed! Our puppy has grown like a weed and is almost as big as our other dogs now! When you have young grandkids, they grow like weeds and are practically new people every time you visit!

See also: grow, like, weed

See also:

big fat
make big
make it big
be in eclipse
eclipse
big-H
big H
big on
big on (something)
gone to the big something in the sky

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