Noun
monster mash (plural monster mashes)
(idiomatic) A particular dance danced to the novelty song Monster Mash (1962).
On what appears to be Taylor's Twitter account, she f posted Oct. 27 containing an image promoting a "Monster Mash" party hosted by Delta Tau Delta, Alpha Tau Omega, Kappa Alpha and Pi Kappa Alpha fraternities at Texas State. Source: Internet