crack
v.— «Over his 11-year pro career, Arce has built a reputation as a ferocious puncher and fearless warrior with a heart as big as his personality. He can clown, but as they say in boxing, he can crack, too.» —“Boxing: Mexican star Arce promises to put on big show” by John Whisler Express-News (San Antonio, Texas) Apr. 11, 2007. (source: Double-Tongued Dictionary)