We still feel pretty woozy after watching last night’s episode of “How I Met Your Mother” -- especially after we witnessed each member of the CBS gang taking a sip from Barney’s “Stinson Hangover Fixer Elixir.” You know what was in that green concoction, right? Funyuns, Tantrum and grease -- yuck!

Steam would have been coming out of our ears if we found out Barney had tricked us into drinking that “placebro” beverage with no real cure. But as always -- Robin's seemingly selfish fiancé fooled his friends with only the best intentions. At the end of “Rally,” the group came to an understanding that Barney was there for them at the lowest point of their lives, helping them rally through their slump.

However, things between the five besties will quickly change from sentimental and civil to them nearly pulling out each other’s hair when “Vesuvius” airs on Monday, Mar. 3. Perhaps that’s why the show’s creators, Carter Bays and Craig Thomas, decided to name next week’s episode after a stratovolcano in the Gulf of Naples. Are they suggesting things are going to erupt into drama in episode 19?

In “Vesuvius,” fans should expect some major drama between Robin and Lily. And we think we have an idea what caused their scuffle. “It’s got everything,” we hear Ted tell The Mother in the trailer for next week’s episode. "Intrigue, betrayal, lamps!” That’s when the promo for episode 19 cuts to a scene of Robin knocking over and breaking a lamp with a slap shot. Smiling from ear to ear, Robin looks pleased that she hit her target. But Lily, however, looks extremely annoyed that the fixture is now in shambles on the floor.

Was Ted describing to his wife the drama that occurred on the day of Robin’s wedding? Either that, or the protagonist was explaining the plot of “The Wedding Bride.” According to episode 19’s synopsis, “the gang will watch a movie that Ted has forbidden them to see.” And since Chris Kattan will be guest-starring as Jed Mosely, we think it's pretty safe to say that fans will be revisiting the distorted film based on his failed relationship with Stella:

But that won’t be the only thing Ted will be dealing with in “Vesuvius.” The synopsis teased that Ted will also be helping Barney pick out a suit for the day of his wedding. And unlike Barney’s bride, he is very picky when it comes to clothing. “Say yes to the suit!” Ted screams at Barney, begging him to just pick something. “I can’t!” Barney cried back.

“How I Met Your Mother’s” episode 19 synopsis also revealed that a guest star would be making their way back to the set: Robin’s sister Katie (Lucy Hale).

Episode 19 will air on CBS on Monday, Mar. 3 at 8 p.m. Are you excited for "Vesuvius"? Let us know what you think is going to happen in “Vesuvius” in the comments section below.