An ornamentaldesign for a tongue vacuum cleaner, as shown and described.
FIG. 1 is a top perspective view of a tongue vacuum cleaner showing the new design.
FIG. 2 is a front view thereof.
FIG. 3 is a bottom perspective view thereof.
FIG. 4 is top view thereof.
FIG. 5 is a left view thereof, the right view thereof being a mirror image of the left view thereof.
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a rear view thereof.
The broken lines shown in FIG. 2 illustrates portions of the tongue vacuum cleaner that form no part of the claimed design. The boundary lines shown in FIGS. 1, 3, and 7 illustrate boundaries that form no part of the claimed design.