Tonight is the night when the Paddy’s Pub gang from It’s Always Sunny in Philadelphia crashes Abbott Elementary — or, as Quinta Brunson would put it, five weird white people will show up to Willard R.

Lisa Kudrow revealed during an interview on “The Drew Barrymore Show” (via People) that she recently discovered a note the late Matthew Perry left for her inside the “Friends” cookie jar, which he gifted her after they wrapped filming the series finale in January 2004. Kudrow wouldn’t reveal what the letter said but mused: “Timing …

Kicking off Jan. 8 with 'Abbott Elementary', Quinta Brunson and Rob McElhenney shared details of the 'It's Always Sunny in Philadelphia' crossover.