The ornamental design for a snakepoolcue, as shown and described.
FIG. 1 is a side elevation view of a snake pool cue showing my new design, The broken line showing of the front section of the pool cue shown in broken lines is for illustrative purposes only and forms no part of the claimed design;
FIG. 2 is a top elevation view, with the top section of the pool cue removed;
FIG. 3 is a right side elevation view thereof, the left side elevation view is identical;