By all means laugh heartily and merrily and deep from within, and as loudly as may be appropriate. But don’t laugh “uncontrollably”, at least not in the presence of others. Certainly not when I’m around. Once you’ve horse-laughed or bray-laughed for five or six seconds, turn that shit down already. Especially in a Starbucks or even a sports bar. The louder and longer you laugh in mixed company, the lower your level of breeding and social discipline. I’ve noted several times that the worst laughers are young women after they’ve had a glass of wine. Then come half-drunk guys in sports bars.