Has two distinct definitions:
1. A very long, lenghty, and stringy turd
that when still inside one's intestines, the tail reaches to the bottom of one's stomach (tummy), and when released into its habitat (toilet, ground, girlfriend's mouth, etc.) it coils up and has head in strike position;
2. A penile erection
that is concealed or hidden by one's action of tucking said erection
between the tuckers pants, boxers, etc., and body so that the penis head
sticks out above the tucker's waistline. Normally, the tucker is unaware of it being visible.