I have developed a bad habit of listening in on people's conversations on public transport. While eavesdropping is not considered a polite hobby, I justify it to myself by thinking that it is good 'hörverstehen' practice.
Normally, I don't understand a lot of what is said, but yesterday I had the pleasure of listening to two 14 year old boys whose mother tongue is 'Merkin.
It was all 'dawg', 'motherf@#$er', 'bitches' and contained very little agreement between subject and verb with respect to number or tense.
I managed to keep a straight face for most of the journey, but after a particularly colourful passage of conversation, I couldn't hold in my laughter anymore.
They got off at the next stop.
Which was a shame, really - the conversation was just getting interesting.