The photo is a screenshot of a mobile phone's lock screen, showing a notification. The notification says: "Kardeşim (My brother)" "Abi gelirken fırından pizza hamuru al annem (When my brother comes, get pizza dough from the oven for my mother.) sürpriz bişey yapacakmış (He's going to do something surprising)." The joke lies in the implied *surprise*. The person sending the message (likely a younger sibling) is implying that his/her older brother (abi) will get pizza dough from the oven for their mother as a surprise. It's a lighthearted, somewhat playful scenario. The phrase "something surprising" doesn't have any specific meaning, it's just a general idea of a surprise, but the act of getting the pizza dough as a surprise is the humourous part of the message. The context is meant to be lighthearted.