here's how i play it... it sounds a little better.
Main Riff (not the exact number of times to strum, but you'll get it)
G----------------|
D----------------|
A--5555-77-------|
E----------5555--|
Verse
G---------------------|
D-----------55555432--|
A---------------------|
E--33333333-----------|
[ Tab from: https://www.guitartabs.cc/tabs/b/bad_brains/pay_to_cum_btab_ver_2.html ]
"Chorus" (those are tens below)
G------------------------------|
D------------------------------|
A--101010101010-9-7------------|
E-------------------10-777777--|
After Chorus
G-------------------|
D-------------------|
A-------7---3-------|
E--10-7---5---3-0~--|
it should be easy to figure out where everything goes. it's only hard cause it's played fast as hell!