The phrase "had me in stitches" is an idiomatic expression that means someone found something very funny or amusing, to the point of laughing uncontrollably. It evokes the image of laughter being so intense that it feels like one's sides are being sewn together. This expression is often used to describe a situation, joke, or story that brings about great laughter.
It probably means you are knit 6 stitches, purl 6 stitches
P2 means purl two stitches as K2 means knit two stitches.
Couching is an embroidery term. Basically, this means you lay the thread (or yarn) flat on the fabric in your desired design, and you fasten it in place with small stitches. The fastening stitches are couching stitches.
This depends on what general kind of stitches you mean. For example, four kinds of hand sewing stitches include the basting stitch, overcast stitch, back stitch and running stitch.
Someone you love and care for will get sick.
This term is used in surgery. The person may have dissolving stitches inside before they stitch (or they may use staples or surgical tape depending on the incision) and the internal stitches will simply dissolve in time.
Usually, rem would mean "remaining", as in, "for all remaining stitches" etc.
Stitch holders are used to hold stitches until you are supposed to add them back into your work. Take the 2 stitches put them onto a stitch holder then continue with your pattnern.
knit 19 stitches or rows (depending on the context)
It means to make 3 chain stitches.
If you mean stitches then no. They usually numb the area before.
If you mean as in needlework, it's greamanna (noun).