ATD At the Doctors
BFF Best Friend Fell
BTW Bring the Wheelchair
BYOT Bring Your Own Teeth
FWIW Forgot Where I Was
GGPBL Gotta Go Pacemaker Battery Low
GHA Got Heartburn Again
IMHO Is My Hearing Aid On
LMDO Laughing My Dentures Out
OMMR On My Massage Recliner
OMSG Oh MY! Sorry, Gas
ROFLACGU Rolling On Floor Laughing And Can't Get UP
TTYL Talk To You Louder

How true!

Good One!!

Forgot got one:

SICGIU Sorry I Couldn't Get It Up