HAT meaning in Messaging ?

Answer: What is How About That mean?

How About That?, originally titled Weather and Why, is a Canadian children's science television series which aired on CBC Television from 1953 to 1954.

reference

Full Form	Category
Highest Astronomical Tide	Academic & Science
Heathlands	Airport Code
H&T Group, P.L.C.	Business
Harbour Acceptance Test	Business
Hatteras Income Securities, Inc.	Business
Hypoxanthine, Aminopterin, Thymidine	Chemistry
History of Advertising Trust	Community
Homework, Attendance, and Tardies	Community
Happy Active Town	Community
Housing Action Trust	Community
Homework And Teachers	Community
Hardware Address Translation	Computer Hardware
Hardware attached on top	Computing
Hub of All Things	Computing
Homeopathy Action Team	General
Honda Automobile Thailand	General
Honda Auto Terrace	General
Hulcher Auto Technik	General
Holo Active Touch	General
Historic Assen Trophy	General
Hyundai Avto Trade	General
Height Above Touchdown	General
Hinte Anderson Trail	Governmental
Handling and Assembly Technology	Governmental
HATHURAN	Indian Railway Station
Histone AcetylTransferase	Medical
Hepatic Artery Thrombosis	Medical
Heparin Associated Thrombocytopenia	Medical
Human African Trypanosomiasis	Medical
Hypoxanthine-aminopterin-thymidine medium	Medical
How About That	Messaging
Here and There	Messaging
Head Aimed Television	Military and Defence
Heathlands, Queensland, Australia	Regional
Heure Avancée de Terre-Neuve	Regional
Heure Avanc? de Terre-Neuve	Regional
Hoora (hierarchical Object-oriented Requirements Analysis) Analysis Tool	Softwares