It's a misplaced space
It's a 'Prossiest Aco', i.e. an Aco that is the prossiest of them all.
(
Tribs 🦇 ↓ dn ʎɐʍ sᴉɥʇ ↓🦇,
Sun 7 Nov 2010, 18:37,
archived)
Silly me.
*smacks own forehead*
And I spend most of my salary on Acos, too.
(
Sea Tramp the thinking woman's 8 Ace,
Sun 7 Nov 2010, 18:44,
archived)