"But I thought you were my elephant or my wave?" (this is in response to the previous "ty bejku"..it is meant to be a teasing answer...but in no way sexual.)
If it is said by man: Ale já myslel, že jsi můj slon nebo vlna? If it is said by woman: Ale já myslela, že jsi můj slon nebo vlna? (BTW - I don't get it either in English or Czech Elephant? Wave? )