(verb, transitive and intransitive) + fuck Can be used as a replacement for most functions of 'fuck': screw up, screw around, screw off. 'Screwing' does not exist as an expletive, parallel to 'fucking'. It does exist as a gerund and a participle: 'John is screwing Mary.' 'John thinks screwing Mary is fun.'
SCREW
Meaning of SCREW in English
Slang English vocab. Английский сленговый словарь. 2012