31st President: Herbert Hoover, 1929
Mat = 31 (Hoover was the 31st president)
Hoover (vacuum cleaner) = Hoover
Pin-up = 929 = 1929 became president
Sherbet = Herbert
Cleaning a mat (31) isn't the only use of a Hoover (Hoover): some find them so attractive they use them as a pin-up (929 = 1929).
Connect Hoover to Herbert
One of the worst things to Hoover (Hoover) up is sticky sherbet (Herbert) powder.
NOTE:
The way Mammoth Memory remembers Herbert is to think of sherbet.
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