Mater is the rusty tow truck from Pixar's Cars, first released in 2006 and voiced by Larry the Cable Guy as the best friend of Lightning McQueen. Clips of his scenes are widely reused online because his loyal, good natured personality makes any call for his help feel warm as well as comic. This line has been lifted onto soundboards and into short edits, where it survives as a shorthand for being stranded, overwhelmed, or in over your head and needing rescue from a reliable friend.