Meaning 1:
A word used to reply to a funny message sent by someone that you're thirsting after. It is the ideal response if you want to seem cool and confident, because simply saying "haha" is plain and can come across as overly keen, whereas no laughter at all just makes you sound like a sociopath.
Meaning 2:
A nervous laugh. Basically used to tell the person they're weird in a nice way.
Sophia: Do not remember doing this lol but 👋 to you
Sabrine: Aha thanks, nothingbetter than an unintentional wave
It’s another word for “ahahahah” instead of saying “ahahahah” you shorten the fucking word and say “aha” so you don’t have to type alll that shit. It’s not pronounced “a ha” it’s “aha” it’s like a little short laugh