Ideas for fun 40th Birthday shirt? Thanks!

[Susan Violette]

We will be in Disney World in 2 weeks, and celebrating my husband's 40th birthday while down there. I think I'm crafty enough to make my own shirts, (I hope!), but I'm looking for advice or ideas on what to write for a fun TShirt, letting all know it's his 40th birthday!
Thanks in advance! I'm new to this posting stuff