It has been dubbed the political battle of the century.

And early indications suggest that as many as 100 million Americans tuned in last night to watch Hillary Clinton and Donald Trump go head-to-head in the first of three planned presidential debates before November's fateful vote. Right now, both sides are still arguing over which candidate scored the biggest points from the face-off - Trump started well - despite, or maybe because of some mysterious sniffles - but Hillary took command of the debate half-way through and Trump never regained his footing. https://twitter.com/HillaryClinton/status/780613300086276096 https://twitter.com/realDonaldTrump/status/780656338628145153 So, while the political wags thrash it out, let us simply enjoy the best, the funniest and the sharpest reaction from Twitter users during the 90-minute clash. https://twitter.com/ElloSteph/status/780590037784104960 She was ready: https://twitter.com/HillaryClinton/status/780570465681235968 Hillary's facial expressions and reactions went down a storm: https://twitter.com/ellievhall/status/780587055587921921 A1 shout-out to The US Office here! https://twitter.com/angelnorelation/status/780593485539782660 LOOK AT HER! https://twitter.com/HillaryClinton/status/780597846814982144 Sigh.  https://twitter.com/FrankLuntz/status/780594882104598528 Oh the SASS: https://twitter.com/spacesharmony/status/780588410364956674 https://twitter.com/FoxNews/status/780578394811445248 So much mansplaining... https://twitter.com/iamrashidajones/status/780583345906298880 Trump's temperament came under scrutiny - not helped by him becoming temperamental while he argued that he has the better temperament to be president: https://twitter.com/TechnicallyRon/status/780594616349384704 https://twitter.com/MysteryGuitarM/status/780593909244104704 https://twitter.com/fakedansavage/status/780593658345107456 Debate moderator Lester Holt could barely get a word in: https://twitter.com/GottliebShow/status/780578693404123136 Trump tied himself in knots over his tax affairs: https://twitter.com/lazlothebuzz/status/780583802632495104 https://twitter.com/HillaryClinton/status/780582541019475968 https://twitter.com/emmieshouse/status/780581791585501184 https://twitter.com/SaraJBenincasa/status/780582685584470016 Plus some of his past statements and untruths got an airing: https://twitter.com/KyleKulinski/status/780577820250673152 https://twitter.com/ziwe/status/780590173193113600 Then there was the topic of the "small loan" from his dad that got him started in business... https://twitter.com/MichaelSkolnik/status/780576063176925184 Oh, and Trump thinks ISIS has been around for a long time... https://twitter.com/SimonMaloy/status/780579628721274880 In the end, America's most respected arbiters weighed in: https://twitter.com/Oprah/status/780588770726993920 ...and, erm... https://twitter.com/jerryspringer/status/780601736327208960 And just remember... https://twitter.com/bricesander/status/780596780740120578