To betray or "cross" someone who is an aspiring young professional (e.g. lawyer, physician).
She canceled our dinner date because she felt ill; yet I saw her out at the bars later that evening. If she decussates me again, I am going to unfollow her on instagram.
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.