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Jennifer Garner

Noel Vasquez/GC Images

You just can't kid a kidder!

Whether playing the bubbly bachelorette in 13 Going on 30 or a double agent on Alias, Jennifer Garner is no stranger to playing a variety of roles on the big and small screen.

But out of all the gigs the actress takes on, her kids don't exactly love one particular role.

"They don't like when I play a mom," she confessed to E! News while promoting Danny Collins.

So they don't like when she's hanging out with other kids on-set all day? "A little bit, yah," she confessed. 

Danny Collins tells the true story of the 1970s rocker (played by Al Pacino) who receives a 40-year-old undelivered letter written to him by John Lennon. Once he reads the note, he embarks on a heartfelt journey to rediscover his family.

When Ben Affleck learned his wife was working alongside Pacino, there had to be some jealousy, right? Not so fast!

"He has worked with Al before so they are friends," she told E! News. "They did Gigli together and they became friends then so it was really fun for me to work with someone who loves him that much."

All that time together has also given Affleck plenty of room to perfect his Pacino impression.

"Oh definitely Ben. His impressions are better than mine," Garner confessed when asked if she or her hubby channels Pacino the best. "I give that to him 100 percent."

Watch the full clip above and find out why Garner went to Build-A-Bear Workshop…without her kids!