This simply means, "as the fuck". 'The' serves as extra emphasis to the fuck. This phrase will therefore intensify the premise of the word before it.
Tom: "Have you tried inserting an SD card to your phone?"
Leo: "I think that's too much work."
Tom: "It's really simple astf. Takes 30 seconds at most."
Leo: "I think that's too much work."
Tom: "It's really simple astf. Takes 30 seconds at most."
by MCSupernova July 12, 2018
Get the Astfmug.