The ornamental design for a double tailfishingworm, as shown and described.
FIG. 1 is a top front perspective view of a first embodiment of the double tail fishing worm showing my new design;
FIG. 2 is a front elevation view of the first embodiment, with the rear elevation view being a mirror image thereof;
FIG. 3 is a right elevation view of the first embodiment, with the left elevation view being a mirror image thereof;
FIG. 4 is a top plan view of the first embodiment;
FIG. 5 is a bottom plan view of the first embodiment;
FIG. 6 is a top front perspective view of the second embodiment;
FIG. 7 is a front elevation view of the second embodiment of the double tail fishing worm, with the rear elevation view being a mirror image thereof;
FIG. 8 is a right elevation view of the second embodiment, with the left elevation view being a mirror image thereof;
FIG. 9 is a top elevation view of the second embodiment; and,
FIG. 10 is a bottom elevation view of the second embodiment.
The double tail fishing worm is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.