What are green cards?!
Question: And how do they work?
Answers: And how do they work?
Green cards are the offspring of yellow cards & blue cards.
:P
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.the card that is given you by the USA gov. after picking 6 tones of green vegetables
they are for st. Patricks day. they say "happy st.patricks day", and if you don't wear green, you will get pinched!