Carlos Mencia — Comedy Is Harder When You Lose the Fat

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Carlos Mencia knows that fat is funny — and dropping 70 lbs can be a career killer for a comedian — but this weekend, the comic found a way to make skinny work … with the help of a little person.

A slimmed-down Mencia was telling us all about the weight loss at The Improv in L.A. … when his former “Mind of Mencia” co-star Little Brad stopped by.

Mencia — pointing to his pal — told us, “We wear the same size shirt” … adding, “I”ll show you that I fit in a dwarf shirt now.” The two proceeded to swap tops … right in the middle of the street.

He added, “I don”t know if this is cool or pathetic.”

Check out the footage — you be the judge.