Tanks a Little! 
Unusual companion? CRUEL
Theme is generated from
TANKTOP. Three theme phrases start with words which could precede TANK:
GASOLINE, SHERMAN, and OXYGEN. But only three --- there would seem to be space for other “tank” words, like FISH, OIL, TOILET, THINK…
RATING:
Three grins = Excellent: Loved it; Two grins = Good: Enjoyed it; One grin = Satisfactory: A bit bland for my taste; One teardrop = Unsatisfying: No fun
