what is aegyo?

애교(aegyo) is a cute way of doing something or saying something. 

for example: 

응 is a normal way of saying yes. 

aegyo way of saying 응 is 웅~ 

오빠 is a normal way of saying oppa.

the way i say 오빠 in aegyo way is 오빵~

언니 is a normal way of saying unni/unnie.

aegyo way of saying 언니 can be 언뉘~

*there are a lot of ways you can change a word to aegyo and there really is no right or wrong way of doing aegyo*