make (funny) faces

to make silly expressions with your face in order to make people laugh.

Karl was making faces at me across the library and I couldn't stop giggling. (usually in continuous tenses)

• at full stretch
• at full throttle
• at full tilt
• at hand
• at heart
• at heels
• a thick skin
• a thing of the past
• a thing or two
• a think-tank
• a thin line
• a thin skin
• a third wheel
• at home
• a thorn in someone's side
• a thorn in something's side
• a three-ring circus
• a tight-arse
• a tin ear
• a tin god
• at issue
• at knee
• at large
• at last
• at least