MFT stands for My First Tour.
It is a mild insult, as something or someone that is MFT is an amateur/ inexperienced / stupid.
Therefore, doing an MFT mistake is doing something dumb which only an amateur would do.
'What kind of #MFT guitar players do you find in guitar shops in America >:('
-The tour bus broke three times, the heating wouldn't turn off.
- Way to start the year in true #MFT style !!!