A large party, often marked by lavishness and showiness. Derived from two filipino words of varying dialects - pamanhickan and parmalaiyee, both meaning a pre-wedding get together in which the marrying families discuss their input to the wedding, and hence show how much clout they will carry in the family.
The X and Y families will host their permahickey on Thursday, two nights before the wedding.
When you pour different colors of dye into a females (or males) anus then they proceed to fart and spurt out the dye resulting in a splatter of colors dripping and spraying out of his/her ass hole which resembles peacock feathers.