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1.
Merrikat is the shipping of Jack Barakat and Zack Merrick (of All Time Low). Jack has joked that "Jack" is an alternate to Merrikat, because Jack + Zack = Jack (or Zack).
"It was so cute when Zack carried Jack around stage."
"I know. Merrikat is so adorable."
by hustlergirl March 13, 2012
 
2.
The nickname given to the FICTIONAL couple Jack Barakat and Zack Merrick from All Time Low. It is purely fake...we think.
Girl# "Aw! Look at them they're sooo sweet!"

Boy# "C'mon Babe, we gotta go"

Girl# "But it's just so Merrikat Cute!"

Boy# "Wait what?...Oh Yeah...I see it now...But still...Let's go"
by Lou_Bear! October 15, 2010