A barrel of laughs
Definition 1 of 1
Pro Tip 1/3Casual Use
The phrase is often used informally among friends or in light-hearted situations. 
At the party, we were all a barrel of laughs, dancing and joking around.
Pro Tip 2/3Positive Vibes
It carries a positive connotation, suggesting good humor and enjoyment. 
The family reunion was a barrel of laughs with everyone's funny anecdotes.
Pro Tip 3/3Not Literal
It's a metaphorical expression, not meant to be taken literally. 
Even though the comedian was a barrel of laughs, there wasn't an actual barrel anywhere.