Wiktionary
throw a sickie
alt. (context slang UK Australia New Zealand English) To take a day off from work for ill health (either real or feigned). vb. (context slang UK Australia New Zealand English) To take a day off from work for ill health (either real or feigned).
Wikipedia
Throw a Sickie
Throw a Sickie is a 12" EP by New Zealand band Tall Dwarfs released in 1986.