Baby sister services

saw an ad at the restaurant near my place:

BABY SISTER SERVICES
call 019-xxxxxxx

i ROFL then i LOL. i wonder what sort of baby sister services is provided?

(ring ring)
baby sister provider: hello
customer: hello, i wan a baby sister to bully & to shove hand-me-downs to
baby sister provider: sure, what time is yr dad home and yr mom out?
customer: at 8pm when mom goes for mahjong
baby sister provider: ok, i'll swing by then..this is my rates...

and in 9months, *poof* a baby sister is born...
wahahahah

for u slow pokes, the ad was supposed to b BABY SITTER SERVICES. bad manglish i tell u