It is said that the Karlani tribes living mostly in KPK didn't have a strong sense of qaumiyat and would identify by tribe first rather than Pashtun.
"Sir Olaf was greatly impressed by Pashtun culture during his tenure with the British government in British India.But he was especially intrigued by Karlani tribes.These were the tribes that were not subjected to rule by foreigners, these are the ones that refer to themselves by tribe rather then by race. For example "Mu Bangash, Mung Afridi, Mizh Wazir, Mizh Mahsud (We Bangash, We Afridi, We Wazir/Mahsud) etc. Instead of " Mung Pukhtana' (We Pathans). They speak the harder dialect of Pashto.(Although the dialects differ by region even among themselves).They predominantly inhabit the hills and are occasionally called hill tribes."
https://en.m.wikipedia.org/wiki/Karlani
Sometimes, in Punjabi as well the f sounds would turn into ph (پھ) sounds like fun=phun, foran=phoran etc.
'fay' sound isnt native to any Indo-Iranian language perhaps.
Gatka is also popular in Punjab, Pakistan especially at village fairs.