Teacher breaks down into tears when his students give him a birthday surprise

A high school class turned their teacher's birthday into a special day.

Kyle Simpler, an English teacher at Burleson High School in Texas told his student earlier this week that he couldn't remember the last time that he had a birthday cake, so in celebration of his special day on Thursday, the class gave him a cake he will never forget.

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One of his students, Sae, shared a video of his cake reveal on Twitter, which has since racked up over 39,000 retweets.

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"Oh my god," Simpler says as he walks into his classroom where his students have thrown him an impromptu party. One student even hands him a gift.

Overwhelmed with joy, Simpler says a simple, "Thank you," as he fights back the happy tears.

See how a 7-year-old's birthday surprise went viral below:

7-Year Old Designs Cake, Birthday Surprise Goes Viral
7-Year Old Designs Cake, Birthday Surprise Goes Viral