Alabang
When you decide to make love to people you are related to. IE do the sex with family
"daddy pass the salt" *your boyfriend, your brother, your cousin, your dad, and your grandpa all reach for the salt* that is an alabang
Alabang
A place where you get ice cream and bread.
Vivian had her ice cream and bread at Alabang.
Alabanging
When you fuck your own sister
"Damn, Jamie Lannister was alabanging his sister"