The Most Ludicrously Underwhelming Uses Of Marvel Girl's Powers--Chapter 6

Cal Rankin, the magnificent Mimic, has just joined the X-Men. Unfortunately, that is the exact same time that the Puppet Master decided Rankin would be the perfect dupe to use against the Fantastic Four. So he uses his scientific/magic clay to possess the Mimic and has him whoop on the X-Men as a trial run.

Of course, at this point Mimic possesses the powers of all of the X-Men, including Professor X. The Angel is out of action from a previous mission, the rest of the X-Men are down. But Jean Grey, mistress of telekinesis, one of the most powerful mutants alive, steps up to the plate:

She drops a tea kettle on his head...

Sigh...

From X-Men #27 (1966)