The act of kissing teeth kmt means to express disapproval contempt, or dissatisfaction with a situation or person by making a sound through the act of sucking air through one's teeth.
Oft performed by people from the Caribbean.
I got to the cricket ground late. When I asked the man next to me what the score was, he spent the next 10 seconds kissing teeth at me!
The act of sucking air in through ones teeth, or 'kissing' one's teeth to show either, disdain, disappointment, disgust, disagreement or disapproval = struups. Favoured by many Caribbeans.
(It can also just be said. 'str-uups'.)
''Clive let it be known that he wasn't impressed by the increased cost of his air fare..'' *struups*