No actual pun intended but here is a few,
Trail Rated
Only in a Jeep
Its a Jeep thing you wouldn't understand
The toughest 4 letter word on 4 wheels
Jeep. There's Only One
When I Die, Bury me in my JEEP. 'Cause it's never been in a hole it couldn't get out of!
My Jeep is not an SUV and your SUV is not a Jeep
My JEEP won a war, your honda mowed my lawn
If it isn't Trail Rated, it isn't a Jeep ;D