This is Scottish slang. To "bam up" someone means to wind them up, and/or trying to make them believe something that isn't true.
Example 1
Person 1: My pal said you have to wear Speedos at the pool
Person 2: Naw you don't, you can wear swimming shorts, your pal on the bam up, he was bamming you up
Example 2
Person 1: What time is the plane leaving tomorrow?
Person 2: 6am mate
Person 1: Stop trying to bam me up (knowing it isn't that early)
Person 2: You're nae fun, it's at 12 noon
Person 1: My pal said you have to wear Speedos at the pool
Person 2: Naw you don't, you can wear swimming shorts, your pal on the bam up, he was bamming you up
Example 2
Person 1: What time is the plane leaving tomorrow?
Person 2: 6am mate
Person 1: Stop trying to bam me up (knowing it isn't that early)
Person 2: You're nae fun, it's at 12 noon
by Undulating_Unicorn April 6, 2024
Get the Bam upmug. Oscar sin bamse, med på det meste. Er en sjiraff. Har vært over hele verden, for det meste i London. Har egen Instagram.
by Wallemlover April 5, 2020
Get the James the bamsmug. A large group of Bams is called an 'intimidation'.
The likely origin of this term is believed to come from the anti-social behaviour of bams and the general anxiety and fear a large group of bams can provoke when gathering in numbers.
The likely origin of this term is believed to come from the anti-social behaviour of bams and the general anxiety and fear a large group of bams can provoke when gathering in numbers.
Hold up, big man! Dinnae cross th' street! There's a massive intimidation of bams 'roon that bus stop!
by Tiberius Baltimore January 5, 2021
Get the Intimidation of Bamsmug. 
a pluggnb rapper started from da bottom of the trenches tryna make it out the projects. “Carti” only posting bangers. sippin sippin on wock. Also goes by bamromani/bamrino.
by bamromani November 30, 2021
Get the bam!mug. by Ghost83 December 4, 2022
Get the Bammug. OMG look at that Hollywood chick with a big bam bam.
Your bam bam full of 💩.
A Gay man loves to look at another man’s bam bam.
I have hemorrhoids inside my bam bam hole.
I’m tired sitting around my big fat bam bam
Your bam bam full of 💩.
A Gay man loves to look at another man’s bam bam.
I have hemorrhoids inside my bam bam hole.
I’m tired sitting around my big fat bam bam
by EMD F59PHI January 5, 2024
Get the Bam Bammug.