increase make bigger or more; "The boss finally increased her salary"; "The university increased the number of students it admitted"
puff up make larger or distend; "The estimates were puffed up"
blow up -
get very angry and fly into a rage; "The professor combusted when the student didn't know the answer to a very elementary question"; "Spam makes me go ballistic"
blow up -
To relatively quickly become much more fat or rotund.
OmegaWiki Dictionary
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blow up To expand suddenly with great force, a loud noise and release energy because of strong inner pressure due to a violent chemical or physical reaction.