(CBS News) -- Grab a tissue and bid farewell... It's the moment fans have been waiting for! After nine seasons, the series finale of "How I Met Your Mother" airs Monday night on CBS, and we have a clip from the big finish! Don't "wait for it" -- watch and share...
In the special clip for ETonline, we flash back to the moment when the gang -- Barney (Neil Patrick Harris), Ted (Josh Radnor), Marshall (Jason Segel) and Lily (Alyson Hannigan) -- decides over drinks to include Robin (Cobie Smulders) in their clique -- and the conditions and one exception that go with the choice.
In the special one-hour series finale of the hit show -- "Last Forever Parts One and Two" -- Ted finally finishes telling his kids the story of how he met their mother. Can you believe that we've come so far?
The "How I Met Your Mother" finale airs Monday, March 31 from 8:00-9:01 p.m., ET on CBS.