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...
You've got something on your neck.
.كان هنالك شيء عالق في ياقتك
Du hast da was am Kragen.
Tienes polvo en la parte del cuello.
Tienes polvo en la parte del cuello.
Tu as une poussière sur ton col.
Hai qualcosa sul colletto.
Tinha uma sujeira na sua gola.
У тебя на воротнике пылинка какая-то.