This is actually great - I didn't know the proper name of that! I first encountered it when I was first learning Czech and one friend prompted me to ask another

This is actually great - I didn't know the proper name of that! I first encountered it when I was first learning Czech and one friend prompted me to ask another "srals?" when they returned from the bathroom after spending a while there (I didn't know what it meant at the time) so I always just assumed it was a sort of informal/slang thing :D And I've encountered "<verb> ses" before but never really picked up on why or how it should be applied, thx the example! I'm from Scotland, but in truth I'm only really fine with Czech when i have time to sit and think about it (like reading) or when I'm talking. I totally panic when listening and get all mixed up :)