Women who have had sex with the same man or men. The more men whom they have each had sex with, the closer the bajingo bond. The male version of this is called the weiner cuz. Note that bajingo sisters that have participated in threesomes or moresomes are especially close. Acknowledgement of bajingo sisterhood is often preceded by some degree of jealousy in one or more parties.
When the exchange rate of your currency with another (generally U.S. Dollar) has reached a point where it is at or above parity, taking into account the exchange fee which PayPal (or a credit institution) collects -- approximately 3%. This is significant when shopping online across the border.
The Canadian dollar's just dipped below PayPal parity! It's only worth $1.011 USD now.