They Go Boom is a 1929 short comedy film directed by James Parrott and starring Laurel and Hardy.

However, their efforts are thwarted by Hardy's persistent coughing due to a cold and Laurel's disruptive snoring, leading to mutual insomnia.

Upon returning to their quarters, a mishap occurs as their air mattress is inadvertently filled with gas, causing it to expand uncontrollably until they are pressed against the ceiling.

As they grapple with the dire predicament, panic ensues, further compounded when Hardy's sneeze triggers the mattress to explode.

The commotion attracts the attention of the hotel owner and law enforcement authorities, who enter the room just as Hardy's sneeze causes the ceiling to collapse, adding to the chaos and calamity.