The ornamental design for a drinkingpouch, as shown and described.
FIG. 1 is a left-front perspective view of the drinking pouch showing my new design.
FIG. 2 is a front elevation view thereof.
FIG. 3 is a rear elevation view thereof.
FIG. 4 is a right side elevation view thereof.
FIG. 5 is a left side elevation view thereof.
FIG. 6 is a top side elevation view thereof; and,
FIG. 7 is a bottom side elevation view thereof.
The broken line showing of liquid contained in the pouch is included for the purpose of illustrating environmental structure and forms no part of the claimed design.
The dashed-dot-dash line showing certain beads and string is included for the purpose of illustrating unclaimed subject matter and form no part of the claimed design.