How I Met Your Mother Season 1 Episode 22: "Come On"
To try and keep Robin from going on a camping trip with co-worker Sandy Rivers, Ted tries to make it rain with a rain dance. Lily gets accepted to her internship and California and her and Marshall break up.
Penelope: Okay, crouch down and bend over a little bit. Barney: Wow, it took 5 shots of tequila to get you in that position. Penelope: I will throw you off this roof. Barney: So much of your mom in you