łamaniec językowy

Her last name actually began with a sound approximating "Mac," but the rest was a major tongue twister.

Perhaps that's why they hover anxiously near the students, practicing tongue twisters with them.

"You have to admit the name is long, and a bit of a tongue twister."

He seemed to be trying to pronounce a tongue twister.

About it that - bit of a tongue twister.

The sign language equivalent of a tongue twister is called a finger-fumbler.

Get your head around tongue twisters and jokes.

A tongue twister is a phrase made specifically to be very difficult to pronounce.

It's a real tongue twister, but choruses all over the world sing it.

Such tongue twisters are extremely short, and contain some addictive background music.