Piggy banking is the act of fucking a girl standing up bouncing her up and down on your dick fast like your trying to shake change out of a piggy bank.
Yeah last nightGinacame over, and I gave her the old piggybank.
Simultaneously farting and ejaculating into a midgets mouth while preforming the National Anthem.
Chase: I'm hungry and nothing is satisfying me, urg.
Sarah: Let me let you in on a little secret, it's called the American Piggybank.
Chase: Will this help my financial situation or the Dow Jones?
Sarah: No, but your country needs you.
Someone who gives their Stamp of Approval to something after someone else has already recommended it.
Originally from the TV show How I Met Your Mother Episode: The Stamp Tramp
Person 1: I just really like the new song by Fun.
Person 2: I have not heard it yet (than goes and listens to the song on YouTube)
The Next Day: Person 2: Have you heard that new song by FUN its one of my most favorite songs of all time.
Person 1: I just told you about that song yesterday. (Rolls Eyes) You are such a piggyback stamper.
A cost effective marketing strategy where two or more companies represent the other firm's non-competing product in various promotions or through referrals.
At the networking mixer, Mary the wedding planner got together with Jason the videographer and mentioned to him how trying out some "piggyback marketing" could work out well for both of them.
i.e., "I'll put a link to your website on my site, if you'll put a link to my website on yours."