When you boof using someone else's boof tool. (Generally frowned upon)
Don't forget to bring a boofer, otherwise you'll be piggybacking by the end of the night.
by BoofatoriumRVA October 05, 2020
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The act of masturbating to pornography behind someone else who has no idea you are there.
Tommy was spanking it to Assaconda, not knowing Chuck was behind him, piggybacking.
by JohnnyInterwebs June 25, 2010
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Taking advantage of the roommate dish-washing routine.

When your roommate has not yet washed their pot or pan, and it is still clean enough to swish water in and cook your own meal. You then leave it where you found it so they can wash it.

Only legitimate if the roommate is unaware of your use.
I've been piggybacking Sarah's pasta pot for a week, and it hasn't moved. I'm pretty sure we're just piggybacking each other at this point.
by HahaOwaitJustKidding March 08, 2011
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The act of requesting someone as a friend on a social media site, who is a mutal friend of one of your friends only for the sole purpose of snooping and being nosey on their profile.
When your girlfriend/boyfriend has a friend and you think that friend may possibly want to be with your mate, so you request them just so you can check out what they do on their profile. This is considered piggybacking.
by Miss D-nice December 29, 2010
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Using your neighbor's wireless network because you can't afford your own.
At my midtown apartment, I piggybacked off the chick next door for months, but when I moved I had to get my own internet service.
by Suzanne B June 03, 2009
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Accessing a rich person’s wireless network from the suburbs which allows you to use their internet connection without their permission which offends not only the rich person, but the ISP because the ISP wants you to pay over 60 dollars a month for cheap bogged-down high speed internet.
A stupid rich stuck-up person from the suburbs bought a wireless router with BROADBAND internet connection (which is totally bogged down by the ISP) and encrypted it with a password but since passwords are crackable the talented hacker cracked the password and is now using the rich persons wireless network which now gives them free internet.

The authorities caught a coupe of people doing this and labeled this a Piggyback.
by usagetoutofiraq October 04, 2011
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