Use 'what the heck!' to stress your surprise in informal situations.

Emphasize Surprize

The phrase can express annoyance without being too harsh or offensive.

Soften Discontent

'What the heck!' is less rude than stronger alternatives when reacting to the unexpected.

This phrase is apt in casual contexts when things go wrong against expectations.

It's a harmless way to vent when mildly annoyed, without escalating the situation.

Start a question with 'what the heck!' to show that you're confused or need clarification.

It suggests you're more than curious – you're also a little annoyed or impatient.