Frothy and Floatable

adjective

• Emitting or filled with bubbles as from carbonation or fermentation.
  • usage: "bubbling champagne"; "foamy (or frothy) beer"
  • synonyms: bubbling, bubbly, foaming, foamy, effervescing, spumy
• Marked by high spirits or excitement.
  • usage: "his fertile effervescent mind"; "scintillating personality"; "a row of sparkly cheerleaders"
  • synonyms: bubbling, effervescent, scintillating, sparkly

• (superl.) Not firm or solid; soft; unstable.
• (superl.) Of the nature of froth; light; empty; unsubstantial; as, a frothy speaker or harangue.
• (superl.) Full of foam or froth or consisting of froth or light bubbles; spumous; foamy.