More commonly known to just mean the act of giving/receiving a BJ /blowjob/blow job.
Can also be used as:
The term to say when you're not giving a fuck.
Pronouced: SUP KA-OW
2. "How was your hot date last night, dude?"
"SAP KAO, MAN!!"
3. "How was your test yesterday?"
"I slept throughout the test... sap kao, man!"