口技

Mnemonic symbol: 口 shall be represented by a mandarin. Karl Marx (k-) is enjoying a mandarin in the outhouse's living room (ou3).

技 = 扌 + 支 : Joan of Arc (ji) is gaming in the space station's bathroom (Ø4). Although she types on the keyboard using a branch (支) and moves the mouse using a toy claw (扌), she still has enough skill (技) to own everyone.