Tinder Handshake

While on an internet induced romantic interlude, it is standard practice to provide oral stimulation of the external anal sphincter. Often used as a greeting or to finalize an agreement.

Failure to provide or rejecting of said stimulation is considered rude or uncouth.

Origin: (Old English) It is believed that the oral stimulation of the anal sphincter was first done by warriors who greeted each other to show that they had no hidden weapons.

While on an internet induced romantic interlude, it is standard practice to provide oral stimulating the external anal sphincter.