Toni gets the shit chewed out of him by his mother, the reason being he never called her whilst laying low. She goes onto a speech of an acclaimed butcher in Chinatown - Giovanni Casa. Toni knows he's a pervert, but his Momma doesn't believe him. It is your job to prove how much of a perv he really is.
Biting a Snake on the Ass
Head to your safehouse to pick up a Camera before heading to Casa's Deli in Chinatown. Your job for now is to tail him like a lion to its prey. He will stop at the Chinatown Plaza to pick up two hookers before tailing him to the wooded area at Callahan Point. Gio certainly has a fetish of diapers, so take a pic of him perfectly, not getting too close, of him chasing the hookers. You get a cutscene once you've got a decent picture. Take it back to the Restaurant to watch Toni getting shit chewed out of him, again.
This will be one of the very few times you will have a Camera in your weapons inventory.