I'm not a senior yet, but I can already relate to the lost my glasses again one.

ATD - At The Doctor's
BFF - Best Friend Fell
BTW - Bring The Wheelchair
BYOT - Bring Your Own Teeth
CBM - Covered By Medicare
CUATSC - See You At The Senior Center
DWI - Driving While Incontinent
FWB - Friend With Beta Blockers
FWIW - Forgot Where I Was
GGPBL - Gotta Go, Pacemaker Battery Low
GHA - Got Heartburn Again
GLKI - Gotta Go, Laxative Kicking In
HGBM - Had Good Bowel Movement
IMHO - Is My Hearing-Aid On
LMDO - Laughing My Dentures Out
LMGA - Lost My Glasses Again
LOL - Living On Lipitor
LWO - Lawrence Welk's On
OMMR - On My Massage Recliner
OMSG - Oh My! Sorry, Gas.
ROFL...CGU - Rolling On The Floor Laughing ...and Can't Get Up
SGGP - Sorry, Gotta Go Poop
TTYL - Talk To You Louder
WAITT - Who Am I Talking To
WTFA - Wet The Furniture Again
WTP - Where's The Prunes?
WWNO - Walker Wheels Need Oil