Implode

[Becky]

To collapse in on ones self, to explode inwards. Also, to fail miserably at something.

[Mark Zuckerberg]

When a friend is trying so hard not to bite at banter directed towards them, that he explodes from the inside out, causing extreme distress and an excessive knock in confidence.

[Dave Paprocki]

To try not to laugh because your boss is there while you are receiving hilarious IMs

[Rihanna]

The exact opposite of explode

[Agnes]

Collapse or cause to collapse violently inwards.