My sis fed me with poision!

Saw my sis drinking green tea i thought it was newly bought.After she drink,
she didn't say anthing.So i thought the tea was fine.I was feeling thirsty as well
hence i went to drink and it taste WEIRD ,HORRIBLE! So i went to my mummy
is the tea like spoilt? and she was like spoilt already still drink cause my mum
sniff it .it smells weird then i was like eeyer... feel like vomiting lo
Went to ask my sis whether she find the tea weird she said yes yet she never say anything about it .walao =.= make me stomach pain went to shit after that haha.