A brain deficiency causing someone to be abnormally soft, often comparable to a feathered pillow or a soft piece of diarrhea. Symptoms of this disease include: going to sleep at 9:30 pm on weekends, only being able to handle up to 5 shots in any 2 hour period, being belligerent from half a four loko, being full off half a sald, and falling asleep in random places such as buses,trains, and other peoples beds.
1. "Wow i just feel terrible for that kid, i heard he just got diagnosed with Lumsdenitis."

2. Mom: (crying) "O where did we go wrong, he used to be such a man."

Dad: "Its not our fault, he was born with Lumsdenitis"

3. "He fell asleep at 8, he must have Lumsdenitis"
by Jmoney, Blatt Blatt February 20, 2011
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A Lumsden is the type of guy who, loves and respects the opposite sex for who they are. They try see the good in people and usually males fall for girls called Madison, girls usually fall for boys called Ben! They are amazing people to be around
Wow, it's a Lumsden
by Jesus, The real One March 27, 2016
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a very cool person alive among the 8 billion in the world
"omg hayley lumsden is that you??"
"yeah it's me 😘😘"
by emogothgirl696969 June 29, 2022
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sexy guy, he is a heart throb with a big heart and big ass. Lumsdens are smart and booty chasers
brooo that lumsden over there, hes a cool guy
by Broman23 February 7, 2019
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