A failed attack against google+ on youtube around 2008. When youtube required you to get a google+ account to comment on youtube, some people were really pissed. Someone created a stick figure out of unicode and other characters and would post it on videos with a message against google+. The message would also ask people to copy and paste it to spread the word. People started copy and pasting it on every video. Some people started creating machine guns and tanks to go along with it. Next thing you know every single video had a huge line of "This is Bob" comments. Wars started between "This is Bob" comments and anti-"This is Bob" commenters. People would flag each other with spam and the such. Finally, in 2010, the "This is Bob" war slowly died down. Some youtubers actually filter out "This is Bob" comments on their videos. You know rarely see them. On ROBLOX you can see "This is Bob" comments warning users about scammers.
☻/ This is bob. Copy and paste him so he can take over youtube.
/▌
/\

☻/ This is bob. Copy and paste him so he can take over youtube.
/▌
/\

░░░░░███████ ▄▄▄▄▄▄▄▄ Bob is building an army.
▂▄▅█████████▅▄▃▂ \☻ This tank & Bob are against Google+
Il███████████████████... ▌\︻╦╤─ Copy and Paste this all over
◥⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙◤.... / \ YouTube if you are with us

░░░░░███████ ▄▄▄▄▄▄▄▄ Bob is building an army.
▂▄▅█████████▅▄▃▂ \☻ This tank & Bob are against Google+
Il███████████████████... ▌\︻╦╤─ Copy and Paste this all over
◥⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙◤.... / \ YouTube if you are with us

░░░░░███████ ▄▄▄▄▄▄▄▄ Bob is building an army.
▂▄▅█████████▅▄▃▂ \☻ This tank & Bob are against Google+
Il███████████████████... ▌\︻╦╤─ Copy and Paste this all over
◥⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙◤.... / \ YouTube if you are with us

░░░░░███████ ▄▄▄▄▄▄▄▄ Bob is building an army.
▂▄▅█████████▅▄▃▂ \☻ This tank & Bob are against Google+
Il███████████████████... ▌\︻╦╤─ Copy and Paste this all over
◥⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙◤.... / \ YouTube if you are with us

░░░░░███████ ▄▄▄▄▄▄▄▄ Bob is building an army.
▂▄▅█████████▅▄▃▂ \☻ This tank & Bob are against Google+
Il███████████████████... ▌\︻╦╤─ Copy and Paste this all over
◥⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙◤.... / \ YouTube if you are with us

__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻

☻__ NO
/▌ /▌
/\ /\ ☻
by Spyblox007 December 16, 2015
A real loser, a laugh and a half, someone pretending to be a man.

Based upon a Spike TV advertisement for some stuff that no real man would want in his body.
This is Bob. Bob needs help. He isn't a real man, so he takes some medicine that will be a man for him.

This is Bob's wife. She just fell in love with the medicine and left Bob. See how happy she is.
by Fly On The Wall December 31, 2005
A common name used by people of indian descent to describe male reproductive organs.
Dr. Suhas: Drop your pants I need to see your bob bob
by Suhas August 14, 2011
Said when you want someone to get a move on, like "hurry up" or used as an exclamation to mean "let's go" like when you leave. Also used as an afirmative reply.
bob, bob, bob, we got to finish before dark.
Did you do the dishes yet? bob
bob, bob, bob, get in the car.
by starfighter77 March 10, 2009
A secret phrase between two men at a social gathering or sporting event where they can alert the other that a chick with nice breasts is in the vicinity without alerting those around them. The term is simply boob minus an o. Boob-o=bob.
1st Dude: "Hey look there's Bob!" (Points at breast)
2nd Dude: "I am so glad he could make it. I was worried he wouldn't."
by keifermail July 12, 2009
a bob is someone who builds houses and when he walks into a building his theme song will play.
person a- "Look here comes bob"
bob- "BOB THE BUILDER CAN WE FIX IT BOB THE BUILDER YES WE CAN"
by SCHOOL123 October 25, 2018