Teachers' Day is being celebrated across the country on Saturday, in the memory of former President Dr S Radhakrishnan, a philosopher-author and India's second President who was born on September 5, 1888. While several netizens took to Twitter to pay tributes to teachers on the Teachers' Day, some came up with hilarious memes and jokes. From thanking search engine Google for 'always being there with students' to Pankaj Tripathi's 'Sacred Games' character Guruji, here are some chuckle evoking tweets: