Generally speaking, the red or blue string is the detonating line.

Even crushing them and stringing them on a line as a lesson to the other snails, but they don't seem to care.

(CD player whirring) ("Everything is Broken" by Bob Dylan plays) ♪ Broken lines, broken strings ♪ ♪ Broken threads, broken springs ♪ (engine sputters) Come on. ♪ Broken idols, broken heads ♪