When ur nuts are sticky, they stick to each side of your legs and when u spread ur legs it creates a fan behind ur wang, kinda of like a bat.... therefore, bat-wang.
a set or pair of hang down vaginal lips that are larger than normal. to be true 'bostonbat wangers'; they must hang low/long enough to wrap around a penis
I went down on her & she had the largest set of bostonbatwangers I've ever tasted.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.