Sticky Healy Thingy is an ability for the Scientist in Plants vs. Zombies: Battle for Neighborville. When activated, Scientist launches a delayed explosive that sticks to whatever it lands on, healing zombies in an area when it explodes.
Heal allies in an area near Sticky Healy Thingy.
Sticky Healy Thingys can be placed anywhere to provide instant healing to them and anyone nearby, making it a useful thing to place when low of health and no others are nearby. It can also be used with Warp to get out of a bad situation and heal up before going back out again.
There's really nothing you can do, but if you have a Sticky Healy Thingy stuck to you, try not to run into a horde of zombies as it will just heal them, making your attacks futile.