One should learn the names of at least some of the Slovaks playing in the NHL, many are stars (Palffy, Bondra, Hossa etc,) and are source of pride.
When speaking to someone, people maintain a shoulder length distance—social distance.
Of course, among friends and family members the distance is shorter and there is much more touching.
These topics are regarded as boring and they are used only when people do not know what to talk about.
There are no special topics that would offend Slovaks.
Please note, however, that Slovaks and Czechs feel very close to each other.