What is the meaning of "burst into flames"?

[mokbon]

Hello?

This is from Friends Season1 Episode11

Chandler's monther: I bought my son his first condoms.
Chandler : And then he burst into flames.

I found it means "to begin to burn suddenly".
What is it with condom and burning?
is this figurative meaning?

[Rover_KE]

I hope so!

I expect his face turned bright red with embarrassment.

We talk about burning with shame.

Rover