硕士

硕 = 石 + 页 : There is a large, huge (硕) rock (石) blocking observatory's bathroom (o4). Sheldon Shrimp (shu) tries to clear it off by wrapping it in a huge (硕) sheet of paper (页) because he heard "paper beats rock". Of course it doesn't work because Sheldon is not a learned person (硕士).

士 = 十 + 一 : Sherlock Holmes (sh) is meeting the bachelor (士) in the bathroom of the space station (Ø4). Sherlock Holmes is playing a flute (一) for him, and the bachelor is wearing a huge cross (十) around his neck.