In order to prove to Yuri that they are actually a married couple, Loid and Yor are supposed to kiss. Loid is willing to get this done immediately for the sake of Operation Strix, but Yor can't do this sober, so she ends up downing a bunch of wine and gets drunk.  Yuri sees his sister this way, also gets drunk, and is unable to make rational decisions anymore...
Why don't we buy some cake on our way home?
لماذا لا نشتري كعكة في طريق عودتنا؟
Compriamo una torta prima di rientrare?
Que tal comprarmos
um bolo no caminho?