A brief period of sadness that occurs after a friend you've been spending a lot of time with leaves.
Alex: Hey, how are you?
Nathan: Feeling a bit down.
Alex: How come?
Nathan: No, nothing. Just had some postmatal depression since John left this afternoon.
A net weight of thirty grams however is passed off or considered to be a standard Imperial ounce (28.35g) with little debate or congestion. Most commonly found in drug culture in countries primarily using the Metric system (i.e. Australia) as some dealers are unaware of how much an ounce actually is, how to set their scales to Imperial units, and/or cannot be bothered measuring to exactly 28.35g. Among some drug users and dealers a Metric ounce is considered to be the standard measurement for an ounce, and is even just referred to as an ounce.
John: How much for the ounce?
John: Nice. Metric ounce?
David: Yeah, of course.