Wiktionary
sham abraham
alt. (context idiomatic 1811 English) To pretend sickness or insanity. (First attested in the late 18th century.)(R:SOED5: page=7) vb. (context idiomatic 1811 English) To pretend sickness or insanity. (First attested in the late 18th century.)(R:SOED5: page=7)