I think it's plectrums.
Is peni the plural for... well... you know?
(
Flippu!,
Thu 6 Nov 2003, 22:17,
archived)
it would be if it were spelled "penus"
mind you, having said that, one anus, two ani?
(
Reverend Dan,
Thu 6 Nov 2003, 22:23,
archived)