{n.} An insult; a disappointment. * /We felt that it was a slap in the face when our gift was returned unopened./ * /Doris thought it was a slap in the face when her boyfriend invited another girl to the dance./ Compare: KICK IN THE PANTS.
SLAP IN THE FACE
Meaning of SLAP IN THE FACE in English
Dictionary of English idioms . Словарь английских идиом. 2012