Gaashaan Yusuf might have learned a lesson not to joke on Twitter. The 16-year-old Attleboro, Mass., resident on Saturday stated that if Bulls star Derrick Rose didn't get hurt throughout this year's NBA playoffs, he would PayPal $10 to anyone who retweeted his tweet. View Full Caption Jonathan Daniel/Getty Images; Gaashaan Yusuf (inset)

CHICAGO — Gaashaan Yusuf might have learned a lesson not to joke on Twitter.

The 16-year-old Attleboro, Mass., resident on Saturday stated that if Bulls star Derrick Rose didn't get hurt throughout this year's NBA playoffs, he would PayPal $10 to anyone who retweeted his tweet.

Through early Monday morning, the tweet had been retweeted more than 4,100 times — meaning Gaashaan would be out $41,000-plus if D-Rose stays away from the injury bug.

If Derrick Rose Doesn't Get Hurt During The 2015 NBA Playoffs, I'll PayPal 10$ To Everyone Who RTs This — Gaashaan Yusuf (@TheRealGaashaan) April 18, 2015

"Since Derrick Rose has been injured so much since his last playoff series, I thought it would be funny if I tweeted it," Gaashaan emailed DNAinfo Chicago.

Gaashaan said he doesn't plan to pay out the money, but will donate some cash to After School Matters. Rose donated $1 million to that organization last year.

Justin Breen says it all started as a joke, but went viral fast:

Gaashaan said within minutes his tweet had been retweeted several times. It then got in the hands of some Bulls fans' Twitter handles, and the tweet quickly went into the hundreds, then thousands of RTs.

"I wrote it as a joke, but I didn’t imagine it going viral. I was expecting maybe a few hundred [retweets] but not thousands," Gaashaan said.

Rose on Saturday scored 23 points in 27 minutes as he led the Bulls to a Game 1 victory over Milwaukee at the United Center. It was Rose's first playoff appearance in three years after he battled several knee injuries.

The Bulls host the Bucks in Game 2 Monday night on the Near West Side.

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