also: エアーセックス
air sex
Slang term for mimicking sexual activity with an invisible partner, often as a joke or performance. Similar in concept to air guitar.
See also: エアギター
He suddenly started doing air sex at the party, and everyone burst out laughing.
Search-only form with long vowel and interpunct.
Wasei-eigo (Japanese-made English) from 'air' + 'sex', modeled after terms like エアギター (air guitar).