X'hin Feyn

Momentary loss of composure yesterday when I over heard a discussion in the office. Two Maltese types were discussing a press conference an who would be coming. I swear I heard the words Sinn Fein. After spluttering at them with comments along the lines of, "Over my dead body" are we inviting those bastards, I was corrected, what had been said was,
X'hin Feyn, something altogether different, but strangely apt.
It means,
"What time, and where?"