We will pour a third cup of wine. I know, a lot of liquids. Feel free to get up and go to the bathroom if needed. We drink the third cup to toast G-d. I'd explain why we should toast him, but I think you know by now. 

בָּרוּךְ אַתָּה יְיָ, אֱלֹהֵינוּ מֶלֶךְ הָעוֹלָם, בּוֹרֵא פְּרִי הַגָּפֶן


haggadah Section: Bareich