He is trying to expose his mom in front of everyone like this
“oh the queen is with Tony, oh look she gave him a drink, wait why is Etty running towards them? Wait he just took the drank his mom was going to give to Tony?!! Omg he drank it and now he collapsed bc of the drink!!!! What was the queen planning by giving it to Tony !!??? WAS SHE TRYING TO POISON HIM!!!!??
and yeh that’s why he took it in front of everyone