I am a big precummer. I also feel tingles from the sensation sometimes. It leaks out a lot of it's a watery kind and when it's thicker precum, it flows out. Makes my cock head super red from pleasure as I stroke with it.
There are times I have been edging for hours and it spurts out so much precum you would think I was actually cumming. It feels super sticky and froths up with the look of soapy bubbles. Hard to explain that last part maybe someone else can say it better if they have experienced it, too.
Longwood8 and Stu311 describe very well what I have experienced.
Although I am not a big precummer, wished I was though, usually a few drops and that's it. On a few occasions, I will produce a bit more, enough to wet the head and or even make a drip or two.
I've taken note that on those occasions I definitely sense a deep tingling or buzzing sensation at the base of my cock, right behind my scrotum. My glans swells up nicely and goes from light pink to dark pink or red as well. The tingling gets stronger to the point I can even feel it up to the glans turning it super-sensitive. Wished I had more control on how to create those moments.
I've also noted that sometimes I start to produce precum pretty steadily and then it just stops no matter how much I try. Anyone else get those moments too?