许久

许 = 午 + 讠 : Xu Xian just loves having lunch in the space station. In fact he loves it so much that he calls mission control to get permission to praise it on an advertising column. After he got the permission, he smears his lunch all over the advertising column.

久 = ㇏ + 勹 : Mnemonic symbol: hourglass.

久 = ㇏ + 勹 : Joan of Arc and the elephant are visiting the outhouse, and they have been looking at the Mona Lisa for hours. Impatiently, Joan of Arc looks at her hourglass telling them that they have been standing there like that for three and a half hours, so she's poking the elephant with a finger to tell him to move on.