One of the things that I love most about Japanese is that just by looking at the Chinese-based kanji characters, you very often not only instantly know the meaning of a word, but you also get a good sense of the etymology. Below are some of my favorite words that spell it all out for you.

1)      不感症 (fukanshou) = no feeling disease = sexual frigidity

2)      千擦り (senzuri) = thousand rubs = masturbation