Sweet Glaswegian's bottom ogled regularly (5)
I believe the answer is:
fudge
'sweet' is the definition.
(fudge is a kind of sweet)
'glaswegian's bottom ogled regularly' is the wordplay.
'glaswegian's bottom' becomes 'fud' (I can't justify this - if you can you should believe this answer much more).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'ogled' are 'ge'.
'fud'+'ge'='FUDGE'
Can you help me to learn more?
(Other definitions for fudge that I've seen before include "Cook - candy" , "Soft creamy sweet" , "Sweet - evasion" , "Something sweet" , "Soft sugary sweet" .)