a barrel of laughs

:  a round bulging vessel of greater length than breadth that is usually made of staves bound with hoops and has flat ends of equal diameter

:  the amount contained in a barrel

:  the amount (such as 31 gallons of fermented beverage or 42 gallons of petroleum) fixed for a certain commodity used as a unit of measure

:  to put or pack in a barrel

:  to move at a high speed or without hesitation

:  to show emotion (such as mirth, joy, or scorn) with a chuckle or explosive vocal sound

:  to find amusement or pleasure in something

:  to become amused or derisive

:  the act of laughing

:  a cause for derision or merriment :  joke

:  an expression of scorn or mockery :  jeer