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...
Perhaps many families throughout this 
world are somehow putting on an act,
ربّما تقوم العديد من العائلات حول 
،هذا العالم بالتّظاهر بطريقة أو بأخرى
als ob die meisten Familien
sich permanent irgendwas vorspielen.
Que en muchas familias del mundo
Que en muchas familias del mundo
je pense que la plupart des familles
jouent le rôle qu’on leur donne.
Secondo me numerosissime famiglie 
in tutto il mondo vivono recitando una parte.
Talvez várias famílias do mundo
estejam em uma espécie de encenação,
Порой так и вовсе кажется, 
что многие семьи живут лишь отыгрывая роли.