"Hey John, you'd better strap-up. We've got to deep in the trailer park and might run into a bit of trouble before Johnny Law can come and back us up."
The strap gap is a admirable body feature in women. It's when a woman's knockers are so big that when she's wearing a bikini top/bra there is a gap between the top part of the bra strap and her chest (the area just above the breasts)
1.Extention or lengthening of straps/lashers on a courier-bag,in order to secure items for transportation on a bicycle.Most common"-addage" =strips of bike inner-tubes.
2.After-market modifications to a pistol.