Does this have a name?

Found a bottle of tequila (long story) but no real mixers.

So, I put ice in a glass, poured it 3/4 full of tequila, and topped it with lime juice. Stirred.

It’s tasty. Going down nicely. Does it have a name? (It’s in a beer glass so that if my wife asks how many drinks I’ve had, I can hold up an empty beer glass and tell her just one)