Cheers

You raise your cup to one creature you can see within range who can also see you.  The target must succeed a Wisdom saving throw or immediately use its reaction to cheer you back and take 1d4 psychic damage in the form of embarrassment and/or shame for falling for such a trick.

If the target doesn't have an available reaction, the spell has no effect.

At Higher Levels.  The spell's damage increases by 1d4 when you reach certain levels; 5th level (2d4), 11th level (3d4), 17th level (4d4), and 20th level (5d4).