As we told you, Ahmed “clock boy” Mohamed is back in Texas and will reportedly spend the summer touring U.S. tech companies along with visits to M.I.T. and NASA.

Before he goes, however, he might want to “study up” on English grammar rules since he’s supposedly some sort of genius inventor who built a clock in a metal case that hides the time from people trying to use it and he wouldn’t want to look stupid:

It’s “their,” chief.

Good advice.

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The ‘Clock Boy’ has returned to Texas