Not an acronym, but what is Conga?
Too embarrassed to ask in the Conga board
Noun
A Latin American dance of African origin, usually with several people in a single line, one behind the other.
Dan used this term for the conga lines where forum members can get in line to receive a penny from the person before them in line and then they will pass on a penny to the next guy once their account is enabled to send payments.