melt someone's butter

melt someone's butter (third-person singular simple present melts someone's butter, present participle melting someone's butter, simple past and past participle melted someone's butter)

1. (slang) To appeal to someone's fancy.
2. (slang) To turn someone on; cause feelings of arousal.

   Hearing you speak in Italian really melts my butter.

• (appeal to someone's fancy): float someone's boat, tickle someone's fancy, turn someone's crank, be someone's cup of tea