What is G and T's?

I came across a word in Match Point movie 2 yrs ago and i ve been searching online dictionaries since then but i couldn’t find the meaning. I wonder if u could help me with that? The word is G and Ts. since the film was made in London, no doubt it s kind of slang Londoners use!

G and T’s is short for ‘Gin and Tonics’.[YSaerTTEW443543]

TOEIC listening, photographs: Two people enjoying the sea[YSaerTTEW443543]

G and T = gin and tonic (tonic water)

Gin and IT - Gin and Vermouth