Upon direct translation, it means 'No Seed' in the Hokkien language, literally. 'Seed' here, is referred to 'Testicles'. This is used on a male person who appears to be a coward or, being afraid to do anything. This slang is usually used in Singapore and some parts of Malaysia.
"Hey John, why don't you just ask Mary out on a date? You Bo-Ji huh?!"