Watermelon smashing comedian GALLAGHER felled by heart attack, rushed to ER!

Gallagher had reportedly suffered a heart attack moments before taking the stage in Texas. 

Gallagher, 65, was at the bar beginning his intense comedy prep when pain ripped through his chest.

The quick thinking club owner promptly called 911.

First responders and EMT immediately transported the ailing funnyman  to the nearest hospital. 

His manager confirmed that Gallagher suffered a "mild to serious" heart attack

Gallagher remain in the hospital for couple of days while docs determine his cardiac state. 

Please, no “Get Well” watermelons though…