Was watching Vs. The Suburbs again and caught these two:

The buy more crew tries, unsuccessfully, to convince Big Mike to continue to lie to his date.~27min

"Michael, my son works here"~39min
The "Stubborn" sign was already shown in Best Friend so either one of them is a coincidence or its multipurpose!
Edit: Actually, looks like the "Don't stress" sign was also used before (see first page of this thread). So yeah, they obviously reuse some of them when appropriate.