Make sure they know it was the chair farting and not you.
I laughed way too hard at this
Absurd Christmas cards for the whole family.
Farty birthday cards for him!
Fart During Situps
Keep Calm and Fart
Old Fart | Egyptian Mummy
Another birthday? Hope it's a gas! http://www.nobleworkscards.com/8051-fartville-funny-talk-bubbles-happy-birthday-card.html
I smell a happy birthday. http://www.nobleworkscards.com/5451-flatulence-and-creative-expression-funny-talk-bubbles-happy-birthday-card.html
Live long and prosper! http://www.nobleworkscards.com/4785-sulu-cut-cheese-funny-cartoons-happy-birthday-card.html
Hold on boys. I got a wicked one brewing: Hope your Christmas is a blast! http://www.nobleworkscards.com/1101-wicked-one-brewing-funny-superindustriallove-merry-christmas-card.html
It's your birthday...make some noise! http://www.nobleworkscards.com/8181-clean-air-zone-funny-talk-bubbles-birthday-card.html
The guard discovered that someone had left an old fart in the elevator: Getting older really stinks... have a happy birthday anyway. http://www.nobleworkscards.com/5247-old-fart-funny-cartoons-happy-birthday-card.html
It's Christmas time. Let'er rip! http://www.nobleworkscards.com/1104-rudolph-fart-funny-superindustriallove-merry-christmas-card.html
Mime Fart. Silent but deadly: Hope your birthday doesn't stink. http://www.nobleworkscards.com/4740-mime-fart-funny-cartoons-happy-birthday-card.html
Birthdays blow. http://www.nobleworkscards.com/5083-cake-fart-funny-cartoons-happy-birthday-card.html
Sir, please, for the love of Zeus, DO NOT FART! xDD