Hot socks would me one of few things in english. Really sexy socks, burning hot socks, socks that taste like hot sauce. But not socks that are making your feet warm.
Nope, nope, nope
teplý = 'warm' (or colloquial 'gay' (similar to German 'schwul')
horký = 'hot'
(pálivý = 'hot, spicy')