Nebudu se vyjadřovat

or "Nebudem sa vyjadrovať" (phrase)
In English "I won't express myself"
Commonly used as a way to tell other chatter that the theme they're talking about makes you uncormofrtable or angry. Can be used as "I don't want to talk about that" or "shut up".

I was with this chick last night and had anal (sex) with her.
"Nebudu se vyjadřovat."