The word PIGGYBACK means the act of carrying sb on your back or shoulders:
I used to give my little son a piggyback when we were walking home from school.
Hop on my back, I’ll give you a piggyback ride.
His daughter likes being carried piggyback.
Can you carry me piggyback all the way to New York?
Piggyback was my favorite means of transportation when I was a child.
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